EP1111109B1 - Method for forming new stitches on a knitting machine - Google Patents

Description

In the production of knitted pieces it is always necessary to form new, additional stitches, for example to widen a knitted piece or to produce a double-sided section in the knitted piece, approximately in the area a bag of a garment. The new stitches will be so far formed so that with an empty knitting needle in the first knitting row the thread is just caught. Only in the second row of knitting this tail is knitted, so that a full-fledged stitch is created. Those places where new stitches are formed by tuck loops are but in the finished knit piece in the form of small holes visible, noticeable. When widening a knitted piece they become so-called "hole holes" therefore often by stitches, the formed on needles that are not for the knitting process of the knitted piece are needed, covered. These stitches However, to cover must be from the needles on which they are formed be, by Umhängevorgänge to those needles be transferred, which the tuck loops for the new stitches have formed. However, these transfers require machine time, in the knitted piece no production progress takes place, and thus increase the production time of the knitted fabric. Moreover, this cover is only for single, in the same Needle bed newly formed stitches possible.

In initial knitting rows of double-sided sections can the so-called "initial holes" by no method on the Knitting machine are covered again and are therefore finished Knitted piece in each case visible, what the quality affected the knit piece.

From EP 0 890 667 A2 is a knitting machine with special sliding needles known that can be used to, from to form a second loop of an existing stitch. To the original stitch is placed on the slider and then with the needle hook a thread through the legs of the original Stitch pulled through. The newly formed mesh can then from the needle hook only to the opposite Needle be handed over.

The present invention is based on the object To propose methods and a device with the new Mesh can be formed without it during formation the stitches to optically disturbing holes in the knitted piece comes.

The object is achieved according to the invention by a method for the formation new stitches on a knitting machine, at which from a stitch hanging on a knitting needle two stitches be formed by the hanging on the knitting needle stitch assigned by one of the knitting needle, regardless of the Needle mounted and drivable transfer element taken and then from the knitting needle a new loop stitch pulled through by hanging on the transfer element mesh becomes. From the original stitch, at the end of the Meshing process on the transfer element was hanging through the knitting needle an additional full-fledged new stitch produced at the end of the stitch formation process in the Knitting needle is hanging. The hanging on the stitch transfer element Mesh can then be transferred to another knitting needle and serve as a starting mesh for a new wale.

The new stitches formed by this process are later not visible in the finished fabric as holes. It arises rather a perfect piece of knitwear, independent of the number of newly formed meshes.

In a knitting machine with latch needles, the needle can be driven out until the stitch behind the open Tongue comes to rest, then a thread in the needle inserted and these are withdrawn so far that the stitch to lie on the closed tongue before that the needle associated with the stitch transfer element driven and inserted between the legs of the stitch and then the needle is withdrawn, leaving the original stitch on the mesh transfer element and in the needle the newly formed Mesh hangs. However, the needle may only go so far be expelled that the stitch on the open tongue comes to rest, then the needle transfer associated with the stitch transfer element pushed on and between the thighs introduced the mesh and then pushed the needle further and a knitting thread are inserted by pulling back the needle by hanging on the stitch transfer element Stitch is pulled so that the original stitch on the mesh transfer element and in the needle the newly formed Mesh hangs. So there is a possibility, the mesh both on the open needle tongue and on the closed Needle tongue through the mesh transfer element. In both cases, the stitch is sufficiently taut, that the stitch transfer element between the mesh legs can be introduced.

In a knitting machine with needle needles, the needle at open slide until the mesh comes to rest behind the open slide, then a thread is inserted into the needle and the slider is closed and the needle are pulled back so far that the Mesh on the closed slider comes to rest before the mesh associated with the needle transfer element driven and inserted between the legs of the mesh and then the needle is withdrawn, leaving the original Mesh on the stitch transfer element and in the needle new made mesh hangs.

The inventive method can therefore be independent of Insert needle type. It is equally suitable for Flat and circular knitting machines.

The knitting machine according to the invention for carrying out a inventive method has for all needles, with which new stitches are to be formed, an associated transfer element up into the stitching area of the Knitting machine is propelled.

Hereinafter, preferred embodiments according to the invention Process on the example of a flat knitting machine closer explained.

Fig. 1a bis 1c

Maschenverläufe von Verfahren zur Erzeugung neuer Maschen nach Verfahren nach dem Stand der Technik;

Fig. 2a, 2b

einen Maschenverlauf zur Verbreiterung eines Gestricks durch seitliches Umhängen nach einem erfindungsgemäßen Verfahren;

Fig. 3a, 3b

einen Maschenverlauf der Bildung einer Anfangsreihe beim Übergang von einem einflächigen Gestrick auf ein zweiflächiges Gestrick unter Anwendung eines erfindungsgemäßen Verfahrens;

Fig. 4a bis 4f

einen Teilquerschnitt durch das vordere und hintere Nadelbett einer Flachstrickmaschine mit Maschentransferelementen mit unterschiedlichen Nadel- und Transferelementpositionen während der Erzeugung einer neuen Masche nach einem erfindungsgemäßen Verfahren;

Fig. 5a bis 5c

einen Teilquerschnitt durch ein Nadelbett einer Flachstrickmaschine mit verschiedenen Transferelement- und Nadelpositionen bei der Übergabe einer Masche vom Maschentransferelement auf eine Nadel des gleichen Nadelbetts;

Fig. 6a bis 6c

einen Teilquerschnitt durch das vordere und hintere Nadelbett einer Flachstrickmaschine mit unterschiedlichen Nadel- und Transferelementpositionen während des Übergebens einer Masche vom Transferelement zu einer Nadel des gegenüberliegenden Nadelbetts;

Fig. 7a, 7b

einen Teilquerschnitt durch ein Nadelbett einer Flachstrickmaschine in unterschiedlichen Nadel- und Maschentransferelementpositionen bei der Übernahme einer Masche von der Nadel auf das Maschentransferelement;

Fig. 8

einen der Fig. 7b entsprechenden Teilquerschnitt durch ein Nadelbett einer Flachstrickmaschine bei Verwendung einer Schiebernadel und Einziehen einer neuen Maschenschleife durch eine Nadel;

Fig. 9

eine schematische Darstellung des Maschenbildes nach einer Maschenverdoppelung nach einem erfindungsgemäßen Verfahren.

Show it:

Fig. 1a to 1c

Pattern courses of methods for producing new stitches according to prior art methods;

Fig. 2a, 2b

a course of stitches for widening a knit by lateral transfer according to a method according to the invention;

Fig. 3a, 3b

a course of stitches forming an initial row in the transition from a monofilament knit to a double-faced knit using a method according to the invention;

Fig. 4a to 4f

a partial cross section through the front and rear needle bed of a flat knitting machine with mesh transfer elements with different needle and transfer element positions during the production of a new mesh according to a method of the invention;

Fig. 5a to 5c

a partial cross section through a needle bed of a flat knitting machine with various transfer element and needle positions in the transfer of a stitch from the stitch transfer element to a needle of the same needle bed;

Fig. 6a to 6c

a partial cross section through the front and rear needle bed of a flat knitting machine with different needle and transfer element positions during the transfer of a stitch from the transfer element to a needle of the opposite needle bed;

Fig. 7a, 7b

a partial cross section through a needle bed of a flat knitting machine in different needle and stitch transfer element positions in the acquisition of a stitch from the needle to the stitch transfer element;

Fig. 8

7b shows a partial cross section through a needle bed of a flat knitting machine using a slider needle and drawing a new loop stitch through a needle;

Fig. 9

a schematic representation of the stitch pattern after a doubling of the stitch according to a method of the invention.

Fig. 1a and 1b show the broadening of a knitted fabric lateral transfer by a method according to State of the art. In Fig. 1a, the thread pattern is shown, after the stitches of the needles E, F, G and H by one Needle have been moved to the right. This became the Needle E free and the total knitting width expanded by one stitch. In the first row of knits after the side wrapping The stitches on the vacant needle E become a tuck looper formed, as Fig. 1b shows. This catch is later than so-called "Ausdeckloch" in the finished knit see. Only in the next row of knitting the tuck is closed Knitted a full-fledged stitch.

In Fig. 1c, the formation of an initial row for a double-surface Section of a knitted piece according to the state of Technology shown. In the range of needles e, f, g, h and i become Tail loops formed as starting row for one on the rear Needle bed H formed part knitted fabric. Only in the following Knitting is a stitch with the needles e, f, g, h and i educated. The tying handles on these needles are also later to be seen as holes in the fabric.

In contrast, Fig. 2a, 2b shows the formation of a new mesh for broadening a knitted piece according to an inventive Method. In Fig. 2a was with the needle E a stitch doubling carried out. The mesh 7, which in a double stitching process, as in the example 4a to 4f, on the stitch transfer element 5 is hung together with the stitches of the Needles F, G and H are hung around a needle to the right. The previously empty needle I is covered with a stitch and thereby the knit widened around a needle. By the in the doubling process formed with the needle E mesh 8 is closed the mesh of the needle A to I from the beginning, that is, there is no "cover hole". In the The first row of knits after the lateral wrapping form all Needles A to I meshes (Figure 2b).

Fig. 3 shows the course of the stitch during the transition from a single-surface Knitted fabric on a partially flat fabric to form new stitches according to an inventive Method. In contrast to the method shown in Fig. 1c According to the prior art, there is already the initial row of complete meshes 7, 7 ', 7' ', 7' '' and 7 '' '', from those by a stitch doubling method according to the invention the new stitches 8, 8 ', 8' ', 8' '' and 8 '' '' have emerged are (Fig. 3a). 3b then shows the first knitting row, in the all involved in the knitting process needles the Make initial row stitches. In the front needle bed these are the needles A to N, in the rear needle bed the needles e to i.

In the figures 4a to 4f is based on cross-sectional drawings through the needle beds 1 and 2 of a flat knitting machine an inventive stitch doubling method with the different positions of the involved needles 3 and 4 and the stitch transfer elements 5 and 6 are shown. In Fig. 4a are the needles 3 and 4 and the stitch transfer elements 5 and 6 in their basic position. In the hook 31 of the needle 3 is a stitch 7, consisting of a knitting thread 70th is formed. In Fig. 4b, the needle 3 in the direction of arrow 300th pushed so far that the stitch 7 behind the opened Tongue 32 of the needle 3 comes to rest. Subsequently, how Fig. 4c shows another knitting thread 80 in the hook 31 of Needle 3 inserted by means of a yarn guide 81. thereupon the needle 3 is withdrawn in the direction of arrow 301 until the Mesh 7 slides on the closed tongue 32 of the needle 3, and at the same time the stitch transfer element 5 in the arrow direction 500 so far advanced that the tip 51 of the stitch transfer element 5 is immersed in the mesh 7 (4d). Subsequently the needle 3 is further retracted in the direction of arrow 301, whereby a new stitch 8 is formed in the needle 3. The original stitch 7 now hangs alone on the mesh transfer element 5, the same time in the direction of arrow 500 is driven forward. As a result, the mesh 7 arrives a stop 53 of the stitch transfer element 5 to lie. Fig. 4f shows the needle 3 after its propulsion in the arrow direction 300 in their basic position. Both stitches 7 and 8 are now available for further cap or knitting.

Fig. 5a to 5c describes, for example, the transfer of on the transfer element 5 hanging loop 7 on another needle 3 'of the same needle bed. This is the mesh transfer element 5 or the needle bed is laterally offset so that the stitch transfer element now in the area of the needle 3 ' to come to rest. The needle 3 'is driven in the direction of arrow 300, so that her needle hook 31 'between the legs of the Mesh 7 dips (FIG. 5a). Thereafter, the mesh transfer element 5 retracted in the direction of arrow 501, so that the mesh 7 now solely on the needle 3 'hangs (Fig. 5b). The needle 3 'is then in the direction of arrow 301 in its normal position pulled back, so that the mesh 7 in the hook 31 'of the needle 3' lies.

As an alternative to hanging the stitch 7 on a needle 3 ' Of course, the same needle bed also comes with the cape Mesh 7 from the transfer element 5 to a needle 4 of the opposite Needle bed in question. This transfer is in the Figures 6a to 6c by partial cross-sectional views of illustrates both needle beds a flat knitting machine. The Needle 4 is driven in the direction of arrow 400 so far that her needle hook 41 dips between the legs of the mesh 7. Subsequently, the stitch transfer element 5 in Arrow direction 501 retracted (Fig. 6b), before the Needle 4 retracted in the direction of arrow 401 in its normal position becomes. The loop 7 is now in the hook 41 of the needle. 4 In contrast, the mesh 8 newly formed during the stitch formation process hangs in the needle 3 of the opposite needle bed. These Position of the stitches 7 and 8 corresponds to the positions of the Maschen 7, 8, 7 ', 8', 7 '', 8 '', 7 '' ', 8' '', 7 '' '', 8 '' '' in Fig. 3.

Figs. 7a and 7b show an alternative of adopting the Mesh 7 from the needle 3 through the stitch transfer element 5. In Fig. 4 has been shown how the mesh 7 on the closed Tongue 32 of the needle 3 lying from the stitch transfer element. 5 was acquired. In contrast, the loop 7 is according to Fig. 7a lying on the open tongue 32 of the needle 3 through Propulsion of the stitch transfer element 5 in the direction of arrow 500 taken over by the top 51. Subsequently, the needle 3 further advanced in the direction of arrow 300, a knitting thread 80th inserted in the needle hook 31 and then the needle 3 in the arrow direction 301 retracted and thus a new loop stitch pulled through the original mesh 7 (Fig. 7b).

However, the method according to the invention can not only be combined with Tongue needles perform, but also with sliding needles 30, as Fig. 8 shows. The mesh 7 is on the closed Slider 35 of needle 30 lying from the stitch transfer element 5 taken by propulsion in the direction of arrow 500. In the Hook 34 of the needle 30 is already the other knitting thread 80 has been inserted. Will now the needle 30 in the arrow direction 331 retracted, so a new loop in the loop Needle hook 34 formed and the mesh 7 from the stitch transfer element 5 completely taken over.

Fig. 9 illustrates the mesh image after a doubling of Stitches. Of the stitches formed with the thread 70 (Figure 4e) the stitch 7 is transferred to the stitch transfer element 5 Service. The stitches 7 'and 7 "are in forming the stitches 8' and 8 '' knitted. The stitch 8 will go through the pulled on the mesh transfer element mesh 7 pulled. The stitches 8, 8 'and 8 "formed with the thread 80 hang in the hooks of the needles 3, 3 'and 3' '.

The inventive method were here using the example of a Flat knitting machine shown. You can, however, in analog Way to be executed on a circular knitting machine.

Claims (6)

1. Method for forming new stitches on a knitting machine, characterised in that two stitches (7, 8) are formed from one stitch (7) suspended on a knitting needle (3, 30), by the stitch (7), which is suspended on the knitting needle (3), being taken by a transfer element (5), which is associated with the knitting needle (3, 30) and which is mounted and drivable independently of the needle (3, 30), and a new stitch loop (80) being subsequently pulled through the stitch (7), which is suspended on the transfer element (5), by the knitting needle (3, 30).
2. Method according to claim 1, characterised in that the stitch (7), which is suspended on the stitch transfer element (5), is subsequently transferred onto a further knitting needle (3', 4) or a further stitch transfer element (6).
3. Method according to either claim 1 or claim 2, characterised in that in the case of a knitting machine comprising latch needles (3), the needle (3) is driven out until the stitch (7) lies behind the open latch (32), a yam (80) is then laid in the needle (3) and this needle is retracted until the stitch (7) lies on the closed latch (32), before the stitch transfer element (5) associated with the needle (3) is driven forward and is inserted between the legs of the stitch (7) and the needle (3) is subsequently retracted so that the original stitch (7) is suspended on the stitch transfer element (5) and the newly formed stitch (8) is suspended in the needle (3).
4. Method according to either claim 1 or claim 2, characterised in that in the case of a knitting machine comprising latch needles (3), the needle (3) is driven out until the stitch (7) lies on the open latch (32), the stitch transfer element (5) associated with the needle (3) is subsequently driven forward and inserted between the legs of the stitch (7) and the needle (3) is then driven further forward and a knitting yam (80), which, as a result of retraction of the needle (3), is pulled through the stitch (7) suspended on the stitch transfer element (5) so that the original stitch (7) is suspended on the stitch transfer element (5) and the newly formed stitch (8) is suspended in the needle (3), is laid in.
5. Method according to either claim 1 or claim 2, characterised in that in the case of a knitting machine comprising slide needles (30), the needle (30) is driven out while the slide (34) is open until the stitch (7) lies behind the open slide (34), a yam (80) is subsequently laid in the needle (30) and the slide (34) is closed and the needle retracted until the stitch lies on the closed slide (34), before the stitch transfer element (5) associated with the needle (30) is driven forward and inserted between the legs of the stitch (7) and the needle (30) is subsequently retracted so that the original stitch (7) is suspended on the stitch transfer element (5) and the newly formed stitch (8) is suspended in the needle (30).
6. Knitting machine for carrying out a method according to any one of claims 1 to 5, characterised in that it comprises, for all needles (3, 30) with which new stitches (8) are to be formed, an associated transfer element (5, 6), which is mounted and drivable independently of the needle (3, 30) and may be driven forward into the stitch forming region of the knitting machine.

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