EP1757721B1 - Transfer needle and method for stitch transfer - Google Patents
Transfer needle and method for stitch transfer Download PDFInfo
- Publication number
- EP1757721B1 EP1757721B1 EP05018558A EP05018558A EP1757721B1 EP 1757721 B1 EP1757721 B1 EP 1757721B1 EP 05018558 A EP05018558 A EP 05018558A EP 05018558 A EP05018558 A EP 05018558A EP 1757721 B1 EP1757721 B1 EP 1757721B1
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- EP
- European Patent Office
- Prior art keywords
- needle
- transferring
- hook
- stitch
- transfer
- 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.)
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- 238000000034 method Methods 0.000 title claims description 15
- 210000000481 breast Anatomy 0.000 claims description 28
- 238000009940 knitting Methods 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
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
-
- 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 transfer needle for flat knitting machines with at least two opposing needle beds, with a needle hook which can be closed by a tongue or a slide, an adjoining needle shaft which widens to form a needle breast to the needle body, and a method for transferring loops on a flat knitting machine. which is equipped with Umitatiadeln invention.
- Um Stens on flat knitting machines Um suctionadeln are usually used with a needle tongue and a transfer spring. However, the transfer with these needles is only safe if the loop to be attached to the needle breast of the transferring needle is applied until it comes to rest on the needle neck of the receiving needle. This is only guaranteed if the necessary detachment force can act on the stitch to be looped, in particular if the transferring needle is in the return movement.
- Knitting technically elaborate knits however, often have needle areas in which stitches are formed, and needle areas that do not participate in the stitching, but wear stitches.
- the last-mentioned needle areas reduce the pull-off effect on those stitches which are formed in their neighboring area. If stitches are to be hung on which only a small pull-off force acts, then these stitches often do not lie exactly on the breast of the transfer needle and can therefore not be enclosed by the hook of the take-over needle. These mesh slide then in the retraction movement of the transfer needle on the closed needle hook and form drop stitches, ie errors in the fabric.
- the present invention is based on the object to provide a transfer needle and a transfer method, which allow a safe transfer of stitches, on which a low withdrawal force acts.
- the invention is achieved by a Um meetadel for flat knitting machines with at least two opposing needle beds with a closable by a tongue or slider needle hook, an adjoining needle shaft which expands to form a needle breast to the needle body, which is inventively characterized in that it its top in front of the needle breast has a substantially triangular elevation, the tip of which forms a Einsch Strukturkante and forms a mesh transfer area together with the needle breast.
- the loop to be transferred is held in front of the needle breast even at a low withdrawal force acting on them in the stitch transfer area, so that they can be reliably detected by the needle hook of the acquiring needle.
- the containment edge may be at the point where the hook tip of the receiving needle is in the loop stitching when the back inside of the hook of that needle is in registration with the needle face of the transferring needle.
- the accepting needle reaches this position after being passed through the legs of the loop to be put on and at the same time moved back with the transferring needle.
- the hook of the accepting needle together with the needle face and the elevation of the transferring needle, includes the stitch from all sides, so that it can be safely picked up can be done by the accepting needle.
- the triangular elevation in the direction of the needle breast has a slope whose inclination is chosen such that a sufficiently large mesh transfer area results between it and the needle breast and the stitch to be looped can easily slide over the containment edge.
- the survey must not lead to an excessive expansion of the mesh.
- its shaping in the direction of the needle breast must be such that a stitch of a thicker or multifilament yarn can also be held in the stitch transfer area.
- the triangular elevation may also have a slope in the direction of the needle hook, the slope of which is less than the inclination of the slope in the direction of the needle face and which is determined by the different retraction speeds of the transferring and receiving needle.
- the slope in the direction of the needle hook must allow a safe and easy sliding of the loop to be folded in the direction of the trapping edge. Due to their relatively flat course, this is guaranteed.
- the containment edge and the transitions of the slopes to the needle shaft may be rounded.
- the high security of the method according to the invention can be achieved, in particular, by carrying out the withdrawal movements of the transferring and receiving needle simultaneously and / or in alternation, such that the tip of the hook of the receiving needle always overlaps the transferring needle from the containment edge until it reaches the tip of the transferring needle, thereby trapping the loop to be transferred in the space between the hook of the receiving needle and the transferring needle.
- Fig. 1 Figure 12 shows two transfer needles 1 "and 1"'during the transfer of a stitch 5, the needle 1 "being the transferring needle and the needle 1""being the receiving needle.
- the appearance of the prior art needles will now be described using the example of the needle 1 ".
- the needle 1" has a needle hook 13 "which is closable by a tongue 15". This is followed by the needle shaft 12 ", which merges into a needle body 11" to form a needle breast 111 ".
- the needle shaft 12" has a substantially smooth upper side between the needle breast 111 "and the point of articulation of the tongue 15".
- the acquiring needle 1 "'with its hook 13"' through the legs of the mesh 5 has been driven through and now in its withdrawal movement in the direction of the arrow 103 '. Also, the needle 1 "is in retracting motion along arrow 102. The rear inside 121"'of the hook 13 "' of the receiving needle 1"'is in registration with the needle face 111 "of the transferring needle 1".
- Fig. 2 shows a transfer needle 1 according to the invention in the side view, which avoids the described problems of Um yogaadeln according to the prior art.
- the needle 1 has a needle hook 13, a needle tongue 15, a needle shaft 12 and a needle body 11.
- the transition between the Needle shaft 12 and the needle body 11 forms the needle breast 111.
- a transfer spring 2 is provided in a bearing groove 112 in the needle body 11.
- the needle shaft 12 now has an approximately triangular elevation 129, the tip of which forms an enclosing edge 126.
- the containment edge 126 is spaced from the closed end of the hook 13 at a distance X and from the bottom of the needle at a distance H1. This is where the hook tip of the take-up needle is located when the back inside of the hook of the take-over needle is congruent with the needle face of the transfer needle.
- the needle cross-section can also taper upwards.
- the elevation 129 includes a mesh transfer area 128 between itself and the needle face 111. In this area 128, a stitch is safe even if only a small pull-off force acts on it. This is ensured by a bevel 127 which extends from the containment edge 126 in the direction of the needle breast 111.
- the inclination W2 of this bevel 127 is selected such that a sufficiently large mesh transfer area 128 results and the stitch to be looped can easily slide over the slope 127 and the containment edge 126.
- the elevation 129 Towards the needle hook 13, the elevation 129 has a slope 125 with a slope W1. The slope W1 is determined by the different retraction speeds of the transferring and receiving needle.
- the Einsch spakante 126 and the transitions of the bevels 125, 127 to the needle shaft 12 and the mesh transfer area 128 are rounded.
- the needle shaft 12 can be provided on its underside, opposite the Einsch Strukturkante 126 with a recess not shown here.
- Fig. 3 shows a Umitational 10 according to the invention, in which a triangular elevation 229 not on the needle shaft 12 but on the Cap spring 2 is located.
- the containment edge 226 is at the same position as the needle 1 in FIG Fig. 2 .
- the stitch transfer area 128, the angle W1 of the slope 225, the angle W2 of the slope 227 and the needle face 111 are also identical to the corresponding features of the needle 1.
- Fig. 4 shows a Um healthyadel 100, in which a triangular elevation 329 is located on a small plate 3, which is connected to the needle longitudinal side opposite to the Um vonfeder and whose thickness corresponds to the capstan.
- the location and the geometry of the elevation 329 and the mesh transfer area 128 are identical to those of the needle 1.
- Fig. 5 shows a further transfer needle 1000, wherein the contour of a survey 429 is formed of a preferably round spring wire steel.
- the elevation 429 is preferably located on the central axis of the shaft 2.
- the location and geometry of the elevation 429 and the mesh transfer area 128 are identical to those of the needle 1.
- the leg forming the slope 425 is fixedly connected to the needle shaft 12 and the slope 427 forming leg protrudes freely into an opening 113 in the needle body 11.
- the contour of the survey 429 in the region of the leg 425 is resilient.
- the rise height to the containment edge 426 may change as the needle 1000 makes its propulsion motion to cause the loop to be looped into the stitch transfer area 128.
- the 6 to 12 now describe the use of two needles according to Fig. 2 for transferring a stitch 5 according to a method of the invention.
- the initiation of the propulsion movement to the outermost position of the transferring needle 1 and the accepting needle 1 'and the retraction movements of both needles 1, 1' from the position at which the hook 13 'of the take-over needle 1' on the straight needle shaft 12 of the transfer needle 1 has coverage are identical to the prior art and therefore not shown.
- Fig. 6 the transferring needle 1 has been driven in the direction of the arrow 100 in the mesh transfer position, which is the farthest Propulsion of the needle 1 corresponds.
- the transferring needle 1 with the open needle tongue 15, the nose 21 of the transfer spring 2 and all areas of the needle shaft slipped through the loop 5, beginning with the needle neck 121, the bevel 122, the needle tongue 15, the horizontal shaft area 124 , the nose 21, the slope 125, the containment edge 126, the slope 127, until reaching the stitch transfer area 128 and the attachment to the needle face 111 through the stitch 5.
- the stitch 5 is normally at the needle breast 111 on.
- the mesh leg 51 lies above the cap spring 2.
- the accepting needle 1 ' has been driven in the direction of the arrow 101 to its foremost transfer position, in which the tip 133' of the hook 13 'is at a safe distance above the stitch 5.
- the tip 133' of the hook 13 ' is at a safe distance above the stitch 5.
- Fig. 7 shows the transferring needle 1 in the first phase of its retraction movement in the direction of the arrow 102.
- the accepting needle 1 ' is still in its foremost transfer position.
- Fig. 8 the transferring needle 1 is still in its retraction movement in the direction of the arrow 102.
- the accepting needle 1 has also begun its return movement in the direction of the arrow 103.
- Fig. 9 the transferring needle 1 and accepting needle 1 'are in return movement corresponding to the arrows 102 and 103 in the phase in which the rear inner side 121' of the hook 13 'of the receiving needle 1' is congruent with the breast 111 of the transferring needle 1.
- the tip 133 'of the hook 13' of the receiving needle 1 ' has overlap with the containment edge 126 of the transferring needle 1.
- the loop 5 is enclosed in a space taken up by the rear and upper hook inside 121' and 122 'of the transferring needle Needle 1 ', the mesh transfer area 128, the slope 127 and the Einsch Strukturkante 126 of the transferring needle 1 is formed.
- the tip 133' of the hook 13 'of the receiving needle 1' retains registration with the contour of the needle shaft 12 of the transferring needle 1, whereby the loop 5 is constantly enclosed in the hook 13 ' remains.
- the transferring needle 1 moves back in the direction of the arrow 102, while the acquiring needle 1' has interrupted their return movement, wherein the hook tip 133 'is in the region of the nose 21 of the transfer spring 2.
- the tip 133 'of the hook 13' of the receiving needle 1 ' has coverage with the last portion of the slope 125th
- Fig. 12 It is shown how the tip 133 'of the hook 13' of the receiving needle 1 'has overlap with the horizontal shaft portion 124 of the transferring needle 1. From this area, the transferring needle 1 and the receiving needle 1 'return movements along the arrows 102, 103 as long as analogous to the method of the prior art, until the mesh 5 has left the transferring needle 1 and they only in the hook 13th 'the receiving needle 1' is located.
- the transfer needle according to the invention and the transfer method according to the invention enable the stitch to be transferred to be entrapped with greater certainty by the receiving needle than is possible with needles and transfer methods of the prior art. In essence, this is accomplished by having the transferring needle and the accepting needle come to a mutual position during their withdrawal movements, in which the needle breast of the transferring needle is congruent with the rearward inside of the needle hook of the receiving needle and the hook tip of the hook of the receiving needle with the Einsch Strukturkante the transferring needle has an overlap. By covering the hook tip of the accepting needle with the containment edge of the transferring needle, the loop is trapped in the hook space of the receiving needle. The hook of the receiving needle grips the mesh as much as possible and in a position in which the hook tip is located above the mesh.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Description
Die Erfindung betrifft eine Umhängenadel für Flachstrickmaschinen mit mindestens zwei gegenüberliegenden Nadelbetten, mit einem durch eine Zunge oder einen Schieber verschließbaren Nadelhaken, einem daran anschließenden Nadelschaft, der sich unter Bildung einer Nadelbrust zum Nadelkörper erweitert, sowie ein Verfahren zum Umhängen von Maschen auf einer Flachstrickmaschine, die mit erfindungsgemäßen Umhängenadeln bestückt ist.The invention relates to a transfer needle for flat knitting machines with at least two opposing needle beds, with a needle hook which can be closed by a tongue or a slide, an adjoining needle shaft which widens to form a needle breast to the needle body, and a method for transferring loops on a flat knitting machine. which is equipped with Umhängeadeln invention.
Dokument
Zum Umhängen von Maschen auf Flachstrickmaschinen werden in der Regel Umhängenadeln mit einer Nadelzunge und einer Umhängefeder verwendet. Das Umhängen mit diesen Nadeln ist jedoch nur sicher, wenn die umzuhängende Masche an der Nadelbrust der übergebenden Nadel solange anliegt, bis sie am Nadelhals der übernehmenden Nadel zur Anlage kommt. Dies ist nur dann gewährleistet, wenn auf die umzuhängende Masche die nötige Abzugskraft wirken kann, insbesondere, wenn sich die übergebende Nadel in der Rückzugsbewegung befindet.Umhänge of stitches on flat knitting machines Umhängeadeln are usually used with a needle tongue and a transfer spring. However, the transfer with these needles is only safe if the loop to be attached to the needle breast of the transferring needle is applied until it comes to rest on the needle neck of the receiving needle. This is only guaranteed if the necessary detachment force can act on the stitch to be looped, in particular if the transferring needle is in the return movement.
Stricktechnisch aufwändige Gestricke weisen jedoch häufig Nadelbereiche auf, in denen Maschen gebildet werden, und Nadelbereiche, die nicht an der Maschenbildung teilnehmen, aber Maschen tragen. Die letztgenannten Nadelbereiche vermindern die Abzugswirkung auf diejenigen Maschen, die in ihrem Nachbarbereich gebildet werden. Sollen Maschen umgehängt werden, auf die nur eine geringe Abzugskraft wirkt, so liegen diese Maschen häufig nicht exakt an der Brust der Übergabenadel an und können daher vom Haken der Übernahmenadel nicht eingeschlossen werden. Diese Maschen gleiten dann bei der Rückzugsbewegung der Übergabenadel über den geschlossenen Nadelhaken und bilden Fallmaschen, d. h. Fehler im Gestrick.Knitting technically elaborate knits, however, often have needle areas in which stitches are formed, and needle areas that do not participate in the stitching, but wear stitches. The last-mentioned needle areas reduce the pull-off effect on those stitches which are formed in their neighboring area. If stitches are to be hung on which only a small pull-off force acts, then these stitches often do not lie exactly on the breast of the transfer needle and can therefore not be enclosed by the hook of the take-over needle. These mesh slide then in the retraction movement of the transfer needle on the closed needle hook and form drop stitches, ie errors in the fabric.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Umhängenadel und ein Umhängeverfahren zu schaffen, die ein sicheres Umhängen auch von Maschen, auf die eine geringe Abzugskraft wirkt, ermöglichen.The present invention is based on the object to provide a transfer needle and a transfer method, which allow a safe transfer of stitches, on which a low withdrawal force acts.
Die Erfindung wird durch eine Umhängenadel für Flachstrickmaschinen mit mindestens zwei gegenüberliegenden Nadelbetten mit einem durch eine Zunge oder einen Schieber verschließbaren Nadelhaken, einem daran anschließenden Nadelschaft, der sich unter Bildung einer Nadelbrust zum Nadelkörper erweitert, gelöst, die erfindungsgemäß dadurch gekennzeichnet ist, dass sie an ihrer Oberseite vor der Nadelbrust eine im Wesentlichen dreieckförmige Erhebung aufweist, deren Spitze eine Einschließkante bildet und die zusammen mit der Nadelbrust einen Maschenübergabebereich bildet.The invention is achieved by a Umhängenadel for flat knitting machines with at least two opposing needle beds with a closable by a tongue or slider needle hook, an adjoining needle shaft which expands to form a needle breast to the needle body, which is inventively characterized in that it its top in front of the needle breast has a substantially triangular elevation, the tip of which forms a Einschließkante and forms a mesh transfer area together with the needle breast.
Durch diese Erhebung wird die umzuhängende Masche auch bei einer geringen auf sie wirkenden Abzugskraft im Maschenübergabebereich vor der Nadelbrust gehalten, sodass sie sicher vom Nadelhaken der übernehmenden Nadel erfasst werden kann.By this survey, the loop to be transferred is held in front of the needle breast even at a low withdrawal force acting on them in the stitch transfer area, so that they can be reliably detected by the needle hook of the acquiring needle.
Vorzugsweise kann sich die Einschließkante dabei an derjenigen Stelle befinden, an der sich beim Maschenumhängen die Hakenspitze der übernehmenden Nadel befindet, wenn die rückwärtige Innenseite des Hakens dieser Nadel sich in Deckung mit der Nadelbrust der übergebenden Nadel befindet. Die übernehmende Nadel erreicht diese Position, nachdem sie durch die Schenkel der umzuhängenden Masche hindurchgeführt und gleichzeitig mit der übergebenden Nadel zurückbewegt wurde. Wenn sich die Einschließkante nun an der Stelle befindet, an der die Spitze des Hakens der übernehmenden Nadel positioniert ist, so schließt der Haken der übernehmenden Nadel zusammen mit der Nadelbrust und der Erhebung der übergebenden Nadel die Masche von allen Seiten ein, sodass eine sichere Übernahme durch die übernehmende Nadel erfolgen kann.Preferably, the containment edge may be at the point where the hook tip of the receiving needle is in the loop stitching when the back inside of the hook of that needle is in registration with the needle face of the transferring needle. The accepting needle reaches this position after being passed through the legs of the loop to be put on and at the same time moved back with the transferring needle. When the containment edge is now at the point where the tip of the hook of the receiving needle is positioned, the hook of the accepting needle, together with the needle face and the elevation of the transferring needle, includes the stitch from all sides, so that it can be safely picked up can be done by the accepting needle.
Bei einer bevorzugten Ausführungsform weist die dreieckförmige Erhebung in Richtung Nadelbrust eine Schräge auf, deren Neigung derart gewählt ist, dass sich zwischen ihr und der Nadelbrust ein ausreichend großer Maschenübergabebereich ergibt und die umzuhängende Masche leicht über die Einschließkante hinweg gleiten kann. Die Erhebung darf nicht zu einer zu großen Aufdehnung der Masche führen. Andererseits muss ihre Formgebung in Richtung Nadelbrust derart sein, dass auch eine Masche aus einem dickeren oder mehrfädigen Garn in dem Maschenübergabebereich gehalten werden kann.In a preferred embodiment, the triangular elevation in the direction of the needle breast has a slope whose inclination is chosen such that a sufficiently large mesh transfer area results between it and the needle breast and the stitch to be looped can easily slide over the containment edge. The survey must not lead to an excessive expansion of the mesh. On the other hand, its shaping in the direction of the needle breast must be such that a stitch of a thicker or multifilament yarn can also be held in the stitch transfer area.
Die dreieckförmige Erhebung kann außerdem in Richtung Nadelhaken eine Schräge aufweisen, deren Neigung geringer ist als die Neigung der Schräge in Richtung Nadelbrust und die durch die unterschiedlichen Rückzugsgeschwindigkeiten der übergebenden und der übernehmenden Nadel bestimmt ist. Die Schräge in Richtung Nadelhaken muss ein sicheres und leichtes Gleiten der umzuhängenden Masche in Richtung auf die Einschließkante ermöglichen. Durch ihren relativ flachen Verlauf ist dies gewährleistet.The triangular elevation may also have a slope in the direction of the needle hook, the slope of which is less than the inclination of the slope in the direction of the needle face and which is determined by the different retraction speeds of the transferring and receiving needle. The slope in the direction of the needle hook must allow a safe and easy sliding of the loop to be folded in the direction of the trapping edge. Due to their relatively flat course, this is guaranteed.
Zur Vermeidung abrupter Spannungsänderungen und zu großer Reibung an der umzuhängenden Masche während des Umhängevorgangs können die Einschließkante und die Übergänge der Schrägen zum Nadelschaft abgerundet sein.To avoid abrupt tension changes and excessive friction on the loop to be looped during the transfer operation, the containment edge and the transitions of the slopes to the needle shaft may be rounded.
Die Erfindung betrifft außerdem ein Verfahren zum Umhängen von Maschen auf einer Flachstrickmaschine mit mindestens zwei sich gegenüberliegenden Nadelbetten, die mit Umhängenadeln nach einem der Ansprüche 1 bis 5 bestückt sind, das gekennzeichnet ist durch die Schritte:
- Austreiben der übergebenden Nadel, bis die umzuhängende Masche sich im Maschenübergabebereich zwischen der Nadelbrust und der dreieckförmigen Erhebung des Nadelschafts befindet;
- Austreiben der übernehmenden Nadel, bis deren Haken durch die umzuhängende Masche hindurch getreten ist;
- Zurückziehen der übergebenden und der übernehmenden Nadel, derart, dass die rückwärtige Innenseite des Hakens der übernehmenden Nadel in Deckung mit der Nadelbrust der übergebenden Nadel kommt, wobei die Spitze des Nadelhakens der übernehmenden Nadel die Einschließkante der übergebenden Nadel überdeckt und die umzuhängende Masche damit im Maschenübergabebereich einschließt;
- weiteres Zurückziehen der übergebenden und der übernehmenden Nadel, wobei die umzuhängende Masche über die Schräge, über die Einschließkante und weiter über die geschlossene Zunge und den Nadelhaken der übergebenden Nadel hinwegbewegt wird, wobei die umzuhängende Masche stets zwischen dem Nadelhaken der übernehmenden Nadel und dem Schaft der übergebenden Nadel eingeschlossen bleibt, bis die umzuhängende Masche die übergebende Nadel verlassen hat und nur noch im Haken der übernehmenden Nadel hängt.
- Expelling the transferring needle until the loop to be looped is in the stitch transfer area between the needle face and the triangular elevation of the needle shaft;
- Expelling the accepting needle until its hook has passed through the loop to be looped;
- Retracting the transferring and transferring needle such that the rearward inside of the hook of the receiving needle comes into register with the needle breast of the transferring needle, the tip of the needle hook of the receiving needle covering the trapping edge of the transferring needle and the loop to be transferred therewithin in the stitch transfer area includes;
- further retracting the transferring and transferring needle, moving the loop to be transferred over the slope, over the containment edge, and beyond the closed tongue and needle hook of the transferring needle, the loop to be transferred always between the needle hook of the receiving needle and the shaft of the transferring needle The transferring needle remains trapped until the loop to be transferred has left the transferring needle and only hangs in the hook of the accepting needle.
Im Gegensatz zu den Verfahren nach dem Stand der Technik unter Einsatz herkömmlicher Umhängenadeln ist bei dem erfindungsgemäßen Verfahren gewährleistet, dass die umzuhängende Masche aufgrund der Formgebung der erfindungsgemäßen Umhängenadeln auch bei geringer Abzugskraft vor der Nadelbrust liegt und somit der Nadelhaken der übernehmenden Nadel sicher in die umzuhängende Masche einstechen kann. Weiter ist gewährleistet, dass durch das Einschließen der Masche während der Rückzugsbewegung der übernehmenden und der übergebenden Nadel die Masche nicht wieder aus dem Haken der übernehmenden Nadel herausschlüpfen kann.In contrast to the method according to the prior art using conventional Umhängeadeln is ensured in the process according to the invention that the loop to be transferred due to the shape of the Umhängeadeln invention even with low withdrawal force in front of the needle breast and thus the needle hook of the receiving needle safely in the umzuhängende Mesh can stitch. Further, it is ensured that by including the stitch during the withdrawal movement of the receiving and transferring needle, the stitch can not slip out of the hook of the receiving needle again.
Neben der besonderen Formung der Umhängenadel lässt sich die hohe Sicherheit des erfindungsgemäßen Verfahrens insbesondere dadurch erreichen, dass die Rückzugsbewegungen der übergebenden und der übernehmenden Nadel gleichzeitig und/oder im Wechsel durchgeführt werden, derart, dass die Spitze des Hakens der übernehmenden Nadel ab der Einschließkante bis zum Erreichen der Spitze der übergebenden Nadel stets die übergebende Nadel übergreift und dadurch die umzuhängende Masche im Raum zwischen dem Haken der übernehmenden Nadel und der übergebenden Nadel eingeschlossen bleibt.In addition to the special shaping of the transfer needle, the high security of the method according to the invention can be achieved, in particular, by carrying out the withdrawal movements of the transferring and receiving needle simultaneously and / or in alternation, such that the tip of the hook of the receiving needle always overlaps the transferring needle from the containment edge until it reaches the tip of the transferring needle, thereby trapping the loop to be transferred in the space between the hook of the receiving needle and the transferring needle.
Nachfolgend wird ein bevorzugtes Ausführungsbeispiel einer erfindungsgemäßen Umhängenadel sowie eines erfindungsgemäßen Umhängeverfahrens im Vergleich zum Stand der Technik anhand der Zeichnung näher beschrieben.Hereinafter, a preferred embodiment of a Umhängeadel invention and a Umhängeverfahrens invention compared to the prior art with reference to the drawings.
- Fig. 1Fig. 1
- eine Seitenansicht zweier Umhängenadeln nach dem Stand der Technik während des Umhängevorgangs;a side view of two Umhängeadeln according to the prior art during the Umhänvorgangs;
- Fig. 2Fig. 2
- ein erstes Ausführungsbeispiel einer erfindungsgemäßen Umhängenadel in der Seitenansicht;a first embodiment of a Umhängenadel invention in side view;
- Fig. 3Fig. 3
- ein zweites Ausführungsbeispiel einer erfindungsgemäßen Umhängenadel in der Seitenansicht;a second embodiment of a Umhängenadel invention in side view;
- Fig. 4Fig. 4
- ein drittes Ausführungsbeispiel einer erfindungsgemäßen Umhängenadel in der Seitenansicht;a third embodiment of a Umhängeadel invention in side view;
- Fig. 5Fig. 5
- ein viertes Ausführungsbeispiel einer erfindungsgemäßen Umhängenadel in der Seitenansicht;A fourth embodiment of a Umhängeadel invention in side view;
- Fig. 6 bis 126 to 12
-
eine Seitenansicht zweier Umhängenadeln gemäß
Fig. 2 während der Durchführung eines erfindungsgemäßen Umhängeverfahrens in unterschiedlichen Phasen des Umhängevorgangs.a side view of two Umhängeadeln according toFig. 2 during the implementation of a transfer method according to the invention in different phases of the transfer process.
Bei der in
Die Nadel 1 weist einen Nadelhaken 13, eine Nadelzunge 15, einen Nadelschaft 12 sowie einen Nadelkörper 11 auf. Der Übergang zwischen dem Nadelschaft 12 und dem Nadelkörper 11 bildet die Nadelbrust 111. Diese Teile sind gleich gestaltet wie bei den Nadeln 1" und 1"' nach dem Stand der Technik. Ebenso wie bei den bekannten Nadeln 1" und 1"' ist eine Umhängefeder 2 in einer Lagernut 112 im Nadelkörper 11 vorgesehen. Im Gegensatz zum Nadelschaft der bekannten Nadeln 1" und 1"' weist der Nadelschaft 12 jetzt jedoch eine annähernd dreieckförmige Erhebung 129 auf, deren Spitze eine Einschließkante 126 bildet. Die Einschließkante 126 ist vom geschlossenen Ende des Hakens 13 im Abstand X und von der Nadelunterseite im Abstand H1 angeordnet. Dies ist die Stelle, an der sich die Hakenspitze der Übernahmenadel befindet, wenn die rückwärtige Innenseite des Hakens der Übernahmenadel deckungsgleich mit der Nadelbrust der Übergabenadel ist. Im Bereich der Erhebung 129 kann sich der Nadelquerschnitt außerdem nach oben hin verjüngen.The
Die Erhebung 129 schließt zwischen sich und der Nadelbrust 111 einen Maschenübergabebereich 128 ein. In diesem Bereich 128 liegt eine Masche auch dann sicher, wenn auf sie nur eine geringe Abzugskraft wirkt. Dafür sorgt eine Schräge 127, die von der Einschließkante 126 in Richtung Nadelbrust 111 verläuft. Die Neigung W2 dieser Schräge 127 ist derart gewählt, dass sich ein ausreichend großer Maschenübergabebereich 128 ergibt und die umzuhängende Masche leicht über die Schräge 127 und die Einschließkante 126 gleiten kann. In Richtung Nadelhaken 13 weist die Erhebung 129 eine Schräge 125 mit einer Neigung W1 auf. Die Neigung W1 wird bestimmt durch die unterschiedlichen Rückzugsgeschwindigkeiten der übergebenden und der übernehmenden Nadel. Die Einschließkante 126 und die Übergänge der Schrägen 125, 127 zum Nadelschaft 12 beziehungsweise zum Maschenübergabebereich 128 sind abgerundet. Zur Vermeidung eines zu großen Aufdehnens der Masche 5 beim Gleiten über die Erhebung 129 kann der Nadelschaft 12 auf seiner Unterseite, gegenüberliegend der Einschließkante 126 mit einer hier nicht dargestellten Einbuchtung versehen werden.The
Die
In
Die übernehmende Nadel 1' ist in Richtung des Pfeils 101 in ihre vorderste Übernahmeposition vorgetrieben worden, in der sich die Spitze 133' des Hakens 13' in sicherem Abstand über der Masche 5 befindet. Während der Vortriebsbewegung sind der Haken 13' und Bereiche des Nadelschafts 12' der Übernahmenadel 1' zwischen dem Körper 11 und der Umhängefeder 2 der Übergabenadel 1 hindurch geglitten.The accepting needle 1 'has been driven in the direction of the
In
In
Während den weiteren Rückzugsbewegungen der übergebenden Nadel 1 und der übernehmenden Nadel 1' behält die Spitze 133' des Hakens 13' der übernehmenden Nadel 1' Überdeckung mit der Kontur des Nadelschafts 12 der übergebenden Nadel 1, wodurch die Masche 5 ständig im Haken 13' eingeschlossen bleibt.During the further retracting movements of the transferring
In
In der in
In
Die erfindungsgemäße Umhängenadel und das erfindungsgemäße Umhängeverfahren ermöglichen, dass die umzuhängende Masche mit größerer Sicherheit von der übernehmenden Nadel eingeschlossen werden kann, als dies mit Nadeln und Umhängeverfahren nach dem Stand der Technik möglich ist. Im Wesentlichen wird dies dadurch bewirkt, dass die übergebende Nadel und die übernehmende Nadel während ihrer Rückzugsbewegungen in eine gegenseitige Position kommen, in der die Nadelbrust der übergebenden Nadel deckungsgleich mit der rückwärtigen Innenseite des Nadelhakens der übernehmenden Nadel ist und die Hakenspitze des Hakens der übernehmenden Nadel mit der Einschließkante der übergebenden Nadel eine Überdeckung hat. Durch die Überdeckung der Hakenspitze der übernehmenden Nadel mit der Einschließkante der übergebenden Nadel ist die Masche im Hakenraum der übernehmenden Nadel eingeschlossen. Dabei umgreift der Haken der übernehmenden Nadel die Masche größtmöglich und in einer Position, in der die Hakenspitze sich oberhalb der Masche befindet.The transfer needle according to the invention and the transfer method according to the invention enable the stitch to be transferred to be entrapped with greater certainty by the receiving needle than is possible with needles and transfer methods of the prior art. In essence, this is accomplished by having the transferring needle and the accepting needle come to a mutual position during their withdrawal movements, in which the needle breast of the transferring needle is congruent with the rearward inside of the needle hook of the receiving needle and the hook tip of the hook of the receiving needle with the Einschließkante the transferring needle has an overlap. By covering the hook tip of the accepting needle with the containment edge of the transferring needle, the loop is trapped in the hook space of the receiving needle. The hook of the receiving needle grips the mesh as much as possible and in a position in which the hook tip is located above the mesh.
Ab dieser Position bleibt während des gesamten restlichen Umhängevorgangs die Hakenspitze der übernehmenden Nadel ständig in Überdeckung mit der übergebenden Nadel, wodurch die Masche sicher eingeschlossen bleibt.From this position, the hook tip of the receiving needle remains in register with the transferring needle throughout the rest of the transfer operation, thereby keeping the loop securely trapped.
Claims (7)
- Transfer needle for flat bed knitting machines with at least two opposing needle beds with a needle hook (13) lockable with a latch (15) or a slider, a connecting needle shaft (12) which extends towards the needle body (11) characterised by forming a needle breast (111), characterised in that an essentially triangle-shaped elevation (129, 229, 329, 429) forms on its upper side in front of the needle breast (111). The tip of this elevation forms an enclosing edge (126, 226, 326, 426) and together with the needle breast (111), it forms the stitch transfer area (128).
- Transfer needle according to Claim 1, characterised in that, when transferring the stitches, the enclosing edge (126, 226, 326, 426) is at that point where the hook tip (133') of the receiving needle (1') is when the rearward inside of the hook (13') of this needle (1') is in alignment with the needle breast (111) of the transferring needle (1).
- Transfer needle according to Claim 1 or 2, characterised in that the triangle-shaped elevation (129, 229, 329, 429) towards the needle breast (111) features an inclined surface (127) of which the gradient (W2) is selected in such a way that the result is a sufficiently large stitch transfer area (128) between the inclined surface and the needle breast (111) and the stitch to be transferred (5) can easily slide over the enclosing edge (126, 226, 326, 426).
- Transfer needle according to one of Claims 1 to 3, characterised in that the triangle-shaped elevation (129, 229, 329, 429) towards the needle hook (13) features an inclined surface (125) of which the gradient (W1) is less than the gradient (W2) of the inclined surface (127) and which is defined by the different return stroke speeds of the transferring needle and the receiving needle (1, 1').
- Transfer needle according to Claim 3 or 4, characterised in that the enclosing edge (126, 226, 326, 426) and the transition areas of the inclined surfaces (125, 127) are rounded off towards the needle shaft (12).
- Procedure for transferring stitches on a flat bed knitting machine with at least two opposing needle beds which are equipped with transfer needles according to one of Claims 1 to 5, characterised by the following steps:- the transferring needle (1) is raised until the stitch to be transferred (5) is in the stitch transfer area (128) between the needle breast (111) and the triangle-shaped elevation (129, 229, 329, 429) of the needle shaft (12);- the receiving needle (1') is raised until its hook (13') is passed through the stitch to be transferred (5);- return stroke of the transferring needle and the receiving needle (1, 1') in a way that the rearward inside (121') of the hook (13') of the receiving needle (1') is in alignment with the needle breast (111) of the transferring needle (1), whereby the tip (133') of the needle hook (13') of the receiving needle (1') covers the enclosing edge (126, 226, 326, 426) of the transferring needle (1) and thus encloses the stitch to be transferred (5) in the stitch transfer area (128);- further return of the transferring needle and the receiving needle (1, 1'), whereby the stitch to be transferred (5) is moved across the inclined surface (125), the enclosing edge (126, 226, 326, 426) and further across the closed latch (15) and the needle hook (13) of the transferring needle (1), whereby the stitch to be transferred (5) is always enclosed between the hook (13') of the transferring needle (1) until the stitch to be transferred (5) has left the transferring needle (1) and only hangs in the hook (13') of the receiving needle (1').
- Procedure according to Claim 6, characterised in that the return stroke movements of the transferring needle and the receiving needle (1, 1') are carried out simultaneously and/or alternately, in a way that the tip (133') of the hook (13') of the receiving needle (1') always straddles the transferring needle (1) from the enclosing edge (126, 226, 326, 426) until reaching the tip of the transferring needle (1) and thus keeps the stitch to be transferred (5) enclosed in the area between the hook (13') of the receiving needle (1') and the transferring needle (1).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05018558.6A EP1757721B2 (en) | 2005-08-26 | 2005-08-26 | Method for stitch transfer |
CNA2006101219191A CN1920148A (en) | 2005-08-26 | 2006-08-28 | Transfer needle and method for transferring stitches |
CN201310141875.9A CN103320962B (en) | 2005-08-26 | 2006-08-28 | Transfer needle and method for transferring stitches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05018558.6A EP1757721B2 (en) | 2005-08-26 | 2005-08-26 | Method for stitch transfer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1757721A1 EP1757721A1 (en) | 2007-02-28 |
EP1757721B1 true EP1757721B1 (en) | 2011-08-17 |
EP1757721B2 EP1757721B2 (en) | 2015-12-30 |
Family
ID=35833553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05018558.6A Active EP1757721B2 (en) | 2005-08-26 | 2005-08-26 | Method for stitch transfer |
Country Status (2)
Country | Link |
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EP (1) | EP1757721B2 (en) |
CN (2) | CN103320962B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106868699A (en) * | 2017-04-21 | 2017-06-20 | 陈仲纪 | A kind of transfer needle |
CN106987994A (en) * | 2017-06-05 | 2017-07-28 | 陈仲纪 | A kind of the take the needle jacquard weave of track of arc walks needle construction and walks needle method |
CN111286863A (en) * | 2020-01-14 | 2020-06-16 | 冯加林 | Knitting needle |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2292940A (en) * | 1940-02-13 | 1942-08-11 | Wildt & Co Ltd | Loop transferring instrument for knitting machines |
US2667770A (en) * | 1950-08-23 | 1954-02-02 | Ordnance Gauge Company | Transfer needle for knitting machines |
US2953914A (en) * | 1950-08-23 | 1960-09-27 | Rudolph E Zerumeith | Stitch-transfer needle for knitting machines |
GB1249976A (en) † | 1967-11-25 | 1971-10-13 | Cotton Ltd W | A method and machine for producing rib and non-rib knitted fabric |
ES256197Y (en) † | 1981-01-27 | 1982-04-16 | MESH TRANSFER NEEDLE FOR POINT GENERIC MACHINES | |
EP0103033A1 (en) † | 1982-09-09 | 1984-03-21 | COMET MARTINELLI S.r.l. | Device for transferring needle loops on flatbed knitting machines |
DE3629334A1 (en) * | 1986-08-28 | 1988-03-10 | Stoll & Co H | FLAT KNITTING MACHINE |
GB9418473D0 (en) * | 1994-09-14 | 1994-11-02 | Everett John | Improvements in or relating to a flat or V-bed knitting machine |
US6047569A (en) * | 1997-05-27 | 2000-04-11 | Shima Seiki Manufacturing, Ltd. | Method for holding a stitch loop |
CN2333724Y (en) * | 1998-09-17 | 1999-08-18 | 杨知新 | Knitting needle for braiding machine |
FR2821093B1 (en) † | 2001-02-20 | 2003-05-09 | Steiger S A C Atel Const | SLIDING NEEDLE FOR KNITTING MACHINE |
CN2618930Y (en) * | 2003-04-24 | 2004-06-02 | 骏隆机械有限公司 | Latch needle of weft round knitting machine |
-
2005
- 2005-08-26 EP EP05018558.6A patent/EP1757721B2/en active Active
-
2006
- 2006-08-28 CN CN201310141875.9A patent/CN103320962B/en active Active
- 2006-08-28 CN CNA2006101219191A patent/CN1920148A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
EP1757721B2 (en) | 2015-12-30 |
CN103320962B (en) | 2015-02-25 |
EP1757721A1 (en) | 2007-02-28 |
CN103320962A (en) | 2013-09-25 |
CN1920148A (en) | 2007-02-28 |
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