EP1041183A2 - Flat bed knitting machine - Google Patents

Abstract

The flatbed knitter, with at least one needle bed and a moving slide with at least one lock (100), has a looper (160,170) at each knock-over cam (130,140) to give looping surfaces of a different size and/or shape according to the setting of the knock-over ca (130,140). The looping surfaces are narrow or wide, according to the setting of the knock-over cams (130,140) and/or loopers (160,170) The knock-over cams (130,130) and/or loopers (160,170) have positive guide surfaces. A guide surface for the needle butt is at the looper which, after looping a stitch, gives the needle an advance movement into a defined gap from the looping surface. A guide surface for the needle butt, at the looper, can be set to give a drawing-in depth of certain needles against the drawing-in dept exerted by the knock-over cam/looping surfaces, to give a stepless needle drawing-in depth adjustment. The loopers (160,170) hav swing movement on the knock-over cams (130,140), and can be adjusted during knitting. At least one lock (100) works as a pressur lock.

Description

The invention relates to a flat knitting machine with at least a needle bed and one sliding along the needle beds Sled, the at least one lock with needle selection devices and has needle countersink.

The wiper surfaces on the needle counter and the needle counter position the lock of a knitting machine determine the shape and the size of a stitch. Depending on the type of knitting, there are different ones Mesh sizes and shapes desired. With double-faced R-R knitted fabrics give slim stitches the most beautiful stitch pattern. This is due to a narrow wedge area on the needle countersink reached. In the case of plain knitted fabrics, result round stitches, on the other hand, are the most beautiful stitch pattern. For generation These round stitches become wide culvert areas on the needle countersinks needed so that as many needles as possible at the same time be held in the deepest culvert position. To this Way, the tendency that the just moved in can be reduced Stitch from the previous stitch the prevailing tensile forces pulls some knitting thread and thereby this stitch a little smaller again.

For high-quality knitted fabrics, the Needle countersink replaced, provided a new knitted fabric with a another type of binding is to be produced. In most However, cases are used with needle countersinks, which are medium Have Kulierfläche and thus a compromise between the optimal needle core for R-R knitted fabrics and single-surface Form a smooth knitted fabric.

The shape of the wedge surface can also determine whether all Needles are drawn in at the same distance or whether in the same needle counterbore position are drawn in at different distances can.

A needle countersink has been proposed in CH 448 358 of the two winder surfaces for the production of two different ones Has mesh sizes. Those needles that one have high needle foot, are on a Kulierfläche and the needles with the low needle feet on the other cul area. So with this needle countersink produce two different mesh sizes, however the size ratio of the stitches to each other is fixed and not is changeable.

The present invention has for its object a To create flat knitting machine in which influencing the mesh shape and / or size by changing the wedge area is possible without replacing the needle counterbores.

The task is started with a flat knitting machine mentioned type according to the invention solved in that with the Needle counters in each case one movably arranged on the needle countersink Kulierelement interacts, regardless of the needle countersink can be controlled and that together with the needle countersink depending on its position Kulierflächen of different sizes and / or Forms. Through this Kulierelement it is possible both with double-faced R-R knits as well as with single-faced Smooth knitted fabrics to achieve the optimal stitch pattern. The needle counterbore itself can, for example, with a Narrow Kulierfläche be equipped, the only effective is when an R-R knitted fabric is to be made. On the wedge element there may also be an area at a corresponding adjustment of the Kulierelements the Kulierfläche the needle countersink widened, so that a total wide cul area arises as it is used for the production of single-surface smooth knitted fabric is optimal. The adaptation to the different types of binding is with an inventive Flat knitting machine possible in a very simple way. An exchange of the needle counterbores is no longer necessary. It all that is required is a corresponding control of the wedge elements be made. Depending on the adjustment of the wedge element can be a narrow or a wide cul area be adjustable.

Further advantages result if the needle counterbore and / or the Kulierelement forced guide surfaces for the needle feet exhibit. This causes an uncontrolled needle movement that expresses itself through irregularities in the stitch pattern, excluded.

The Kulierelement can also be a guide surface for the needle feet have a propulsion after the stitching of a stitch the needle at a defined distance from the wiper surface causes. This allows the tension on the Knitting thread works, reduce. The different knitted ties must be realized with a wide variety of knitting threads become. If the forces in the knitting threads during the knitting process get too big, they tear. A knitted fabric with such Thread breaks ("burst") are rejects. Through the Guide surface on the Kulierelement it is now possible, however Needles again shortly after reaching the lowest touch point targeted to drive out a small distance and thus the Reduce thread tension in the loop loops. Even at high knitting speeds, this measure prevent the knitting threads from tearing.

The Kulierelement can also be a guide surface for the Have needle feet, with which the insertion depth of certain needles compared to the draw-in depth of the needle counter sinking surface is changeable. Thus, stitches can be formed have a size difference to those stitches on the countersink culvert surface are formed. It can even a continuous adjustment of the mesh size difference a continuous adjustment of the feed depth of the certain Needles are realized.

For the adjustable arrangement of the wedge elements on the lock there are different options. In a preferred one Embodiment can pivot the sinker on the needle counterbore be arranged.

There are special advantages if the wedge element during the knitting process is adjustable. The mesh shape and -size can then be stopped without stopping the machine during the Adjust the knitting process. The locks also work according to the pressure lock technology, it is even possible that Define the wiper area for each individual stitch.

Preferred configurations according to the invention are described below Needle countersink and wedge elements based on the drawing described.

Fig. 1

eine schematische Ansicht der dem Nadelbett zugewandten Seite eines Strickschlosses einer erfindungsgemäßen Flachstrickmaschine;

Fig. 2

eine Detailansicht eines Nadelsenkers mit Kulierelement des Strickschlosses aus Fig. 1 in einer ersten Verstellposition des Kulierelements;

Fig. 3

eine der Fig. 2 entsprechende Darstellung in einer zweiten Verstellposition des Kulierelements;

Fig. 4

einen Schnitt entlang der Linie IV-IV durch die Anordnung nach Fig. 3;

Fig. 5

eine der Fig. 2 entsprechende Darstellung eines Nadelsenkers mit einer zweiten Ausführungsform eines Kulierelements;

Fig. 6

eine der Fig. 2 entsprechende Darstellung eines Nadelsenkers mit einer dritten Ausführungsform eines Kulierelements;

Fig. 7

eine der Fig. 2 entsprechende Darstellung eines Nadelsenkers und eines Kulierelements zur stufenlosen Beeinflussung der Maschengröße;

Fig. 8

einen Schnitt entlang der Linie VIII-VIII durch die Anordnung nach Fig. 7.

Show it:

Fig. 1

a schematic view of the side facing the needle bed of a knitting lock of a flat knitting machine according to the invention;

Fig. 2

a detailed view of a needle countersink with Kulierelement the knitting lock of Figure 1 in a first adjustment position of the Kulierelements.

Fig. 3

a representation corresponding to Figure 2 in a second adjustment position of the wedge element.

Fig. 4

a section along the line IV-IV through the arrangement of FIG. 3;

Fig. 5

one of FIG 2 corresponding representation of a needle countersink with a second embodiment of a Kulierelements.

Fig. 6

a representation corresponding to FIG 2 of a needle countersink with a third embodiment of a wedge element.

Fig. 7

a representation corresponding to Figure 2 of a needle countersink and a Kulierelement for infinitely influencing the mesh size.

Fig. 8

a section along the line VIII-VIII through the arrangement of FIG. 7th

The knitting lock 100 from FIG. 1 has a needle drive part 110, which cooperates with a limiting part 120. There is also a leading countersink on the knitting lock 100 130 and a trailing needle counterbore 140 are provided if the direction of movement as indicated by arrow 150. The needle counterbore 130 has no function. Also points the knitting lock 100 two Kulierelemente 160 and 170, the cooperate with the needle core 130, 140 as follows is described.

The device 1 shown in Fig. 2 corresponds to the needle countersink 140 and the wedge element 170 from FIG. 1. The needle countersink is designated here with 2 and the Kulierelement with 3. The Kulierelement 3 is pivotable at the pivot point 4 on the needle counterbore stored. By acting in the direction of the Arrow 11, the Kulierelement 3 is pivoted into its inner end position. An existing wiper surface 8 is thereby disabled. The feet 10 of the not shown Needles participating in the knitting process slide along a plane 5 of the needle counterbore 2 until it is under a narrow Kulierfläche 6 on the countersink 2 their the one in question Mesh size have reached the corresponding wedge position. In this culvert position, the needle feet 10 through a surface 7 on the countersink 2 positively guided, whereby a high Uniformity of mesh size is achieved. The narrow one Kulierfläche 6 results in an optimal stitch pattern for R-R knitted fabrics.

Fig. 3 shows the arrangement 1 of Fig. 2 when the Kulierelement 3 by acting in the direction of arrow 12 in his outer end position is pivoted. Now it closes Kulierfläche 8 to the Kulierfläche 6 of the needle countersink 2 and this widens them. Due to the widened wetting area 6 and 8 can now multiple needle feet 10 in at the same time the lowest wedge position. This gives an optimal stitch pattern for single-surface smooth knitted fabrics.

As can be seen in the sectional view according to FIG. 4, the wiper surface lies 6 of the needle countersink 2 and the wiper surface 8 of the wiper element 3 in different levels. This enables interaction with a needle selection device, not shown and a knitting lock, also not shown with pressure lock technology that specified each individual knitting needle can be whether it over the narrow Kulierfläche 6th or to be cultivated over the wide cul area 6 + 8. Needle feet 10 that are only halfway up the needle counterbore 2 are applied, are calculated on the narrow surface 6 and the Needle feet 10, which lie against the needle counterbore with the entire height of the foot, are cultivated on area 6 + 8. That way it is possible that in knitted fabrics in which within a Knitting row a change from a single-surface weave a double-faced weave takes place, every stitch in the optimal shape is formed.

The arrangement 60 shown in FIG. 5 corresponds to the arrangement 1 from FIGS. 2 and 3, but with the additional possibility that the needles after reaching the wedge position can perform a defined relief movement. The The arrangement again has a countersink 2 and a wedge element 30 on that at point 40 to its inner end position is pivoted and thus the position shown in Fig. 2 occupies. The wiper element 30, however, has an additional one Guide surface 9, which the needle feet 10 after culturing on the narrow wedge surface 6 of the needle counterbore 2 again Push it up a bit and drive out the needles a little, which reduces the tension in the knitting thread. A positive guide surface 15 is provided on the needle counterbore 2, which brings the needles to their rest position. In cooperation with a needle selection device, not shown, and a knitted lock, also not shown, with a pressure lock technology can be designed for every single knitting needle whether she should carry out the relief movement or Not. The needle feet 10, which are only half the height of the needle counterbore don't experience any relief movement while the needle feet, which lie against the needle counterbore with the entire foot height, are detected by the curved surface 9 and thereby the Carry out relief movement.

With this design, the wedge element 30 is in its outer End position swiveled (not shown), so the selected Needles either on the narrow wedge surface 6 or the wide cultivation area 6 + 8 can be cultivated.

The arrangement 50 from FIGS. 6 and 7 enables formation of meshes with a different mesh size than that with the Kulierfläche 6 of the needle counterbore 2 formed stitches. The The arrangement again has a countersink 2 with a narrow one Kulierfläche 6 and a positive guide surface 7. The associated wedge element 31 is again about a pivot point 41 pivoted and in Fig. 6 in its inner end position shown by acting in the direction of arrow 11 ''. The needle feet 10, which is only half a foot on Needle countersink 2 are applied to the narrow surface 6. The wiper surfaces 6 and 7 form one Positive control. The needle feet, which are at the full height of the foot Needle countersink 2 are applied to the wide wedge area 6 + 8 calculated. The forced guidance is through the surfaces 7 and a further surface 14 is formed on the wedge element 31.

In Fig. 7, the Kulierelement 31 is acted upon by Direction of arrow 12 '' pivoted into its outer end position. The feet of the needles, which have a mesh size corresponding to that Form the needle counterbore position, lie at half the height of the foot Needle countersink 2 and are cultivated over the area 6. The Surfaces 6 and 7 again form a constraint for them Needles.

The feet of the needles, which are supposed to form a larger stitch, than it corresponds to the needle counterbore position, lie with the entire foot height on the needle counterbore 2. Your way to the creation runs over the plane 5 and formed on the needle counterbore 2 the Kulierfläche 6 to that formed on the Kulierelement 31 Level 13 and then to surface 81. This surface 81 is the wiping surface for the larger stitches and also forms with the mesh delimiting surface formed on the wedge element 31 14 a forced operation.

The wedge element 31 can be shown in FIG. 6 innermost swivel position continuously up to its outermost, 7 pivoted position. this makes possible a continuous increase in the mesh size on the Kulierfläche 81 are formed, compared to those who participate the Kulierfläche 6 are formed. The adjustment of the wedge element 31 can take place during the knitting process, so that it is possible to knit single stitches in the row to produce in different sizes.

Claims (9)

Flat knitting machine with at least one needle bed and a carriage sliding along the needle beds, the at least one lock (100) with needle selection devices and needle countersink (2, 130, 140), characterized in that that with the needle countersinks (2, 130, 140) each a moving element arranged movably on the needle counterbore (3, 30, 31, 160, 170) that works independently can be controlled by the needle counterbore (2, 130, 140) and that together with the needle countersink (2, 130, 140) depending on his Position of wiper surfaces (6, 8, 81) of different sizes and / or form. Flat knitting machine according to claim 1, characterized in that that by adjusting the wedge element (3, 30, 31, 160, 170) a narrow or a wide wedge area (6, 8, 81) is adjustable. Flat knitting machine according to claim 1 or 2, characterized in that that the needle countersink (2, 130, 140) and / or the Kulierelement (3, 30, 31, 160, 170) positive guidance surfaces (7, 9, 14, 15). Flat knitting machine according to one of claims 1 to 3, characterized in that the wedge element (30) a Has guide surface (9) for the needle feet (10), the after knitting a stitch, the needle drives in a defined distance from the culvert surface (6). Flat knitting machine according to one of claims 1 to 4, characterized in that the wedge element (31) is a Has guide surface (81) for the needle feet (10) with which is the insertion depth of certain needles versus the insertion depth changeable by the needle counter sinking surface (6, 8) is. Flat knitting machine according to claim 5, characterized in that that the guide surface (81) is a stepless adjustment the depth of the needles. Flat knitting machine according to one of claims 1 to 6, characterized in that the wedge elements (3, 30, 31, 160, 170) swiveling on the needle countersink (130, 140) are arranged. Flat knitting machine according to one of claims 1 to 7, characterized in that the wedge element (3, 30, 31, 160, 170) is adjustable during the knitting process. Flat knitting machine according to one of claims 1 to 8, characterized in that the at least one Lock (100) works according to the pressure lock technology.

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