EP1069221B1 - Shaping - Google Patents

Description

The present invention relates to a method for manufacturing a three-dimensional knitted fabric. When spiking needles inactivated in predetermined sections of the needle bed and reactivated after a given number of stitches. The non-deactivated, ie durchgestrickten areas bulge This is because they re-enable the inactivated ones Needle through the interconnected courses in between the inactivated areas which one or more courses of the knitted Can be arranged area. This inactivation / activation can also be stepped, i. e. in sections from one course to another, so that one can In a predefined way, the knitted forms get e.g. can be used as preformed seat covers.

The method for producing three-dimensional knitted fabrics by means of spinning is the subject of claim 1. Advantageous Further developments of the method are the subject of the associated Dependent claims.

A first method for producing three-dimensional knits consists in the increase / decrease technique. On the increase become one at any point in the knitted fabric Chopsticks two sticks formed. This increase technique is therefore associated with a broadening of the knitted fabric. On the increase be in a first type of procedure at least on one side the increase point the stitches to the desired increase width moved outwards. In an alternative Verfahrensart be Knitted stitches in two needle areas separately and then by wrapping at least one area with each other connected.

While the known increase and decrease of stitches in the edge area a knit merely for contouring the knit fabric, However, does not lead to three-dimensional deformation is in the inventive increase / decrease in the knitted fabric additional Stitches incorporated into the fabric or taken out of the fabric, which leads to a deformation of the knitted fabric and thus too lead a three-dimensional shape. The technique of mitigation represents the exact opposite process. When mitigating At least two wales become a wale summarized. This process is with a wrap the stitches continue on at least one side of the knit connected inwardly so that the resulting gap is closed becomes. This technique can also successively over several courses continue so that you can desired bulged areas can generate. A possibility of bulging exists e.g. in that one first the increase and then the Minor technique performs, thereby causing a bulge due to a Excess material in the area of increase / decrease received becomes. Another technique first applies the mitigation and then again the increase to the original mesh size which will result in a deficit in the reduction / increase area occurs on material, in turn, a deformation of the entire knitted fabric and thus causes a three-dimensional shaping.

The transfer of the stitches is preferably carried out as follows. The stitches are taken from an active needle bed Auxiliary needle bed transferred. The auxiliary needle bed, among other things can also be an active needle bed is now compared to the moved active needle bed. Then the stitches become again, but now in a staggered position, on the active Needle bed suspended. Although this method is therefore of the machine Expiration is a bit expensive, but it allows the production of spatial crocheted with unprecedented Options.

Another method of making three-dimensional knits is that needles in certain areas of the Knitted fabric can be inactivated while using the needles in the knitting continues in other areas. By later activation these inactivated needles e.g. after one or more Mesh rows are achieved in this inactivated area Constriction of the knit, what again in the desired manner can be used to achieve certain shapes. If e.g. at a knit in the edge regions of the flat knitting machine Needles inactivated and this inactivation in the distance repeated a few courses in different widths, This results in a spherical structure with a very homogeneous Structure. Again, the inactivation of the needles should only over a few courses, so that too much deformation of the knitted fabric at one point. Farther For example, the width (needle number) of the inactivation can be alternately changed become so that thereby also a scattering of the deformed Positions in the deformation range can be achieved. These digits are located at the points where an inactivated Area adjacent to a knitted area.

Both of the above principles for producing geometric Knitted fabrics can with the inventive method to the effect be prepared that the increase / decrease of the mesh on the one hand or the inactivation of needles on the other many places in the deformation area is distributed. In each Fall becomes, on the one hand, a more even structure of the three-dimensional one Gestricks achieved, in turn, with improved mechanical Characteristics goes along. Relevant procedures will be in the articles Les textiles techniquas, Thomas Stoll, Filiere Maille, Nov./Dec. 1994, and flat knitting machines for producing three-dimensional knitted fabrics for technical applications, H. Hong et al., Melliand Textile Reports 1-2 / 1996.

Both in the spinning technique as well as the increase / Minor technology Occur areas that are normal knitted areas are changed, be it that this Area is inactivated over several courses or is that at a certain point wales are produced or be taken away by merging wales. At These places usually occur inhomogeneities in the fabric on. These inhomogeneities are partly related to education connected by "holes" at the crossing points.

According to the invention are in this area in addition to the looping weft and / or warp threads introduced, on the one hand lead to this area is reinforced, and on the other hand, that the holes on the inhomogeneous Jobs are closed. This shrinking of the Holes can be improved, inter alia, if weft and / or Warp yarns of elastic material, e.g. rubber threads be used.

In the case of the spooling technique it is e.g. advantageous when in at least one, preferably two rows, one inactivated Surround the area, a weft is inserted. This Weft may be knitted with respect to the adjacent Rows without bond are lost. He can go there, too Catch or otherwise involved. In any case is thereby achieved that the formation of holes at the contact point contracted between activated and unchecked area or closed and therefore as inhomogeneity hardly noticed anymore.

Another way of reducing inhomogeneities both in the increase and decrease as well as in the Spickeltechnik This is because meshes are split in the inhomogeneity area are, i. from a mesh are e.g. by stitching creates two stitches on another needle bed, which then better fill the fabric in the inhomogeneous area and a better connection between different areas, e.g. in the activated and not activated area at the Effecting the winding technique. When meshing becomes too achieved a more homogeneous hole-free surface, if on the new empty needle placed in the fabric a split stitch becomes.

Another technique for reducing the holes on the inhomogeneous Make the increase / decrease / spike to normal knit is that one or more edge stitches in this inhomogeneous area to be put on catch.

After all, there is a special one for the spinning technology Method of reducing holes, especially for staircase pickles, i.e. at the width of the inactivation of row of stitches to course or even mesh areas is changed to mesh rows areas.

One possibility is that to the outermost mesh before an inactivation of the meshes one or more additional knit (horizontal) stitch (s), which will later on at the later Activating miteingestrickt is. This way will be in the area of inactivation achieves a larger volume. One Similar effect can also be achieved by the outermost needle of the area to be inactivated over a row of stitches not inactivated, so that an additional vertical Mesh is achieved, in contrast to another horizontal outer stitch, if in the last active rows an additional outer stitch is knitted. Again, several can vertical stitches are attached. Both methods effect an increase in the volume at the spit line, i. the Line in which the last course before the inactivated Area associated with the first course after inactivation becomes.

Of course, this technology can also be used to Knitted sections of any shape with each other to connect, as described later in a detailed example becomes. The techniques of insertion described above of weft and / or warp yarns laying on catch of stitches, splitting stitches and knitting additional ones horizontal or vertical stitches can be used in all operations such as spinning, waxing and mitigating, if necessary combined, be applied, in particular in a staircase-like Increase / decrease or with a stair-like spike a dense and homogeneous increase / deficit line or spine line to obtain.

In the inhomogeneity area, the mesh can be purposefully knitted more tightly to make holes in this area prevention.

In the case of using Twinnnadel can throughout Knitted area to be knit with the A needle while in the inhomogeneity area knit with the A and B needle to to increase the knit density in this area. In the same Way can in the inhomogeneity area with a finer needle pitch to be knitted.

The techniques described above are ideal for Production of all possible shaped technical knits, in particular seat covers, headrest covers, armrest covers and fiber composite moldings.

Fig. 1

das Maschenbild beim Zunehmen,

Fig. 2

das Maschenbild beim Mindern,

Fig. 3

einen Treppenspickel mit geraden Kanten,

Fig. 4

einen Treppenspickel mit gebogenen Kanten,

Fig. 5

ein Strickmuster mit inaktivierten Bereichen zur Herstellung eines Helms,

Fig. 6

unterschiedliche Möglichkeiten zur Verringerung der Inhomogenitäten an einer Kante,

Fig. 7

ein Gestrickstück mit Zunahme und Minderung,

Fig. 8

ein zweilagiges Gestrick, bei dem die Spickelkante bzw. Kante der Zunahme schräger Minderung in beiden Lagen versetzt ist,

Fig. 9

einen Eckspickel,

Fig. 10

ein Nadelschema zum Mindern bei einem doppelflächigem Gestrick, und

Fig. 11

eine weiteres Nadelschema eines alternativen Minderns bei einem doppelflächigem Gestrick.

The techniques of the present invention will be described below, by way of example, in the schematic drawing. In this show:

Fig. 1

the mesh picture on the increase,

Fig. 2

the stitch pattern when reducing,

Fig. 3

a staircase pick with straight edges,

Fig. 4

a stair tine with curved edges,

Fig. 5

a knit pattern with inactivated areas for making a helmet,

Fig. 6

different ways of reducing the inhomogeneities at one edge,

Fig. 7

a knitted piece with increase and decrease,

Fig. 8

a two-ply knitted fabric in which the crease edge or edge of the increase of oblique reduction is offset in both plies,

Fig. 9

a corner pick,

Fig. 10

a needle pattern for reducing a double-surface knitted fabric, and

Fig. 11

Another needle scheme of an alternative mitigation in a double-faced knit.

Fig. 1 shows a stitch pattern of a knitted fabric 10 whose width was increased by increasing a mesh. If you start chronologically With the procedure increase, one recognizes that in the bottom row five stitches 12,14,16,18,20 on five needles hung. In the row knitted after that the stitches became 18 and 20 shifted to the right by one stitch, causing the third needle from the right in this course remained free. In the subsequent stitching becomes this free needle as well a meshing thread fed so that the fabric in the penultimate row already has one more stitch.

It can be seen that in the second course, in which the Mesh 18 and 20 were offset outward by one needle relatively large free space remains, which is an inhomogeneity of the knitted fabric effected in the form of a hole. It is now possible that Mesh 18 before moving the mesh 18 and 20 on further To split external needles, so that in the subsequent Move the stitches 18 and 20 to more external needles the one split mesh 18a on the same needle as the previous stitch 18 is hung while the other split stitch 18b is hung one needle to the right. It is obviously, that by this splitting the mesh in the increase range the resulting hole can be filled very well, so that the inhomogeneity in the knit when stitches increase is barely noticeable. To split the stitch is in the stitch formation the mesh 18 before the increase a first split stitch 18a produced on the active needle bed, while a second Auxiliary mesh 18b on an auxiliary needle bed or another active needle bed is generated. This auxiliary needle bed can quite advantageously be the needle bed through which the outer stitches 18 and 20 are hung outward. The mesh 20 created on the active needle bed also opens the auxiliary needle bed is hung, and the two on the auxiliary needle bed located mesh 18b and 20 are by lateral Moving the auxiliary needle bed or other active needle bed relative to the first active needle bed around a needle to the outside offset, after which the stitches 18b and 20 from the auxiliary needle bed be hung back onto the active needle bed.

FIG. 2 shows the knitted fabric 10 from FIG. 1 in the region of the reduction a stitch. The figure shows in the first two courses the six meshes 12,14,16,18a, 18b and 20, like them were obtained by the increase of FIG. 1. In the penultimate 2 are now the stitches 18a and 18b connected to a needle, which in the course of further Knitting in the last stitch the two on a needle linked stitches 18a and 18b combined to stitch 18 become. This process was thus the reverse process to Fig. 1. The merging of the stitches 18b and 18a, with a displacement of the stitches 18b and 20 about a needle is connected to the left, short is described. The stitches 18b and 20 will be on an auxiliary needle bed or on another active needle bed umgehängt. This needle bed or other active needle bed is then left around a needle shifted, and the stitches 18b and 20 are hung back. There on the left of the two needles of the active needle bed still As the stitch 18a hangs, the stitches 18a and 18b are thus hung together and feeding the next mesh thread 18 replaced by a stitch.

Fig. 7 shows a knitted fabric 30, which is first in the direction of a stick extending increase range 32 and then a in Having the rod direction extending acceptance region 34. Both Areas 32, 34 are characterized in that, per stitch row, or every other course of stitches two stitches increased (32) or diminished (34). The knitting process becomes explained in more detail below. The corner stitches 36 and 38 of the knitted fabric hang on adjacent needles. The increase takes place in such a way that after each course of stitches or every other row of stitches the stitches on both sides of the stitch 36.38 can be shifted outwards by one stitch. This after Offset outside is already described in connection with FIG. 1 Service. By this putting outwards are inside two needles free when feeding the next mesh thread be filled with new stitches. Thus, each stitch row or every two courses two new stitches in the Generated inside, d. H. the knit will be in the area of increase 32 constantly wider on each side of the edge 40.42 x new Maschen have been knitted. At the end of the increase range 32, the fabric 30 has 2 times more stitches than at the beginning. These 2x new stitches hang between the original ones Stitches 36, 38, side by side at the beginning of the knit hung on the needle bed. In the area of reduction, the reverse occurs Process. Along the edges 44.46 are in each course or in each second course, two stitches each summarized to one, as in connection with Fig. 2 has been described. This process is repeated x times, so that removed on both sides of the edges 40,46 each x stitches be, and the fabric 30 at the top again the same Width is like in the beginning. At the end of the reduction 34 thus depend the two stitches 36,38 again side by side. It is easy understand that the fabric 30 in the area between the Increase 32 and the reduction 34 is heavily overgrown since the Knitted fabric in this area has a lot more stitches than in the upper and lower edge area at the beginning of the increase or on the End of the reduction 34.

With reference to Fig. 7, a spike has been shown, within which a knit piece is additionally inserted into a knit fabric. It is of course possible to knit first the take-off area and then the increase area, thereby obtaining a "cut-out" tuck.
It is alternatively possible to effect the increase by knitting the stitches from the edge to the stitches 36 and 38, respectively, on separate sections of the needle bed, and then hanging them together and joining them together, eg by stitching or side stitching stitches.

Fig. 3 shows a fabric 50 with a stair nick 52. Im Area of the staircase pickle 52 becomes a three-dimensional shape of the knitted fabric 50 is achieved by needles on the left edge of the knitted fabric are disabled, so that in this area over one or more rows of needles are not knitted. During the Inactivation does not make the inactivated needles a looping thread fed so that on these needles, the stitches in front of the Inactivation of the needles get stuck. At the later again Successful activation of the needles will be the new stitches then knitted with the last before the inactivation of the needles Connected stitches. As a result, the mesh before and simply knitted together after the inactivated area the knitted fabric in this area according to the number the non-knitted course is contracted. In a row of stitches are thus mesh present, the many rows of stitches knitted earlier. The stairpick is explained in detail below. In the course A all needles are still active. In course B is the needle 1 inactivated, so that on the needles now the stitches A1 and B2-n hang. In the course C, the needles 1 and 2 are inactivated. On the needles then hang the stitches A1, B2 and C3-n. In the row of stitches F, the stitches hang on the needles A1, B2, C3, D4, E5 and F6-n. In the courses G to K become the inactivated needles successively starting from the right again activated. In the mesh G then hang the stitches A1, B2, C3, D4 and G5-n on the needles. In the course H, it is the stitches A1, B2, C3 and H4-n. In the course J hang the needles A1 and J2-n on the needles and in K stitch row hang only stitches of the row K, ie K1-n on the needles, with which the tuck is knitted. imaginary can the deformation of the fabric 52 through the spill 52 understand, if you imagine that you have a substance has, from the one side a corner in the shape of the staircase pick 52 cuts out and then the cut edges together combines.

The bobbin technology is of course not on the in Fig. 3 shown limited Spickel. Thus, e.g. Per Mesh multiple needles are inactivated / activated, causing you get quite moderate deformations. The steps of However, stairs can also be several courses high, thereby you get a very strong deformation of the knitted fabric. It In this way, all the desired deformations of the knitted fabric can be achieved in terms of creating a three-dimensional knitted fabric will be realized.

Fig. 4 shows a knitted fabric 60 with a spool 62, the against Beginning and end of flat steps 64 (one course high, two Rows of stitches wide). In the transition, the steps become 66 normal high (one stitch high, one stitch wide) and go in the middle in higher levels 68 (two courses high, a course wide). Fig. 4 shows how strong the shape the spit and thus the type of deformation already by variation the step height around a course and variation of the Step width can be changed by one stitch. The variation However, it is possible within very large limits, e.g. over almost the entire knitting width and over up to ten courses Height.

Fig. 5 shows a knitting scheme for making an approximately spherical Knitted fabric. The figure actually shows this Knitted textile surface 70. The shaping of the textile is now achieved in that within a mutual area the textile surface needles at different distances and in be disabled a different width. In Fig. 5 bottom left, the needles are inactivated in a first area 72, for example, only about 20 needles. A few Rows of stitches further inactivate the stitches in a region 74, which extends across the width of 60 needles. Again a few stitches later, the needles are over a width 76 is activated, between the two above Latitude, e.g. Needles. Other areas 78 are like this wide, that these areas from both sides of the knitted fabric overlap. The points at which a deformation of the knit 70 occurs, the points 71 at which the inactivated Areas 72 to 78 adjacent to the knitted areas. Therefore, the width of the inactivated areas, i. the number of inactivated needles constantly varies, so that also the deformation points 11 evenly within the deformation range b are distributed. In this way one avoids Furthermore, a defined structuring of the decrease, which in turn would be associated with a weakening of the knit. Of the mutual distance of inactivations 72,74,76,78 is relative constant, so that the deformation points 71 in the direction the meshing have an approximately uniform distance. Thus, the deformation points 11 become uniform in the knit 70 distributed. It is readily apparent from Fig. 5 that the after inactivation of needles non-knitted areas increase towards the outside. If you keep in mind that the upper and lower edges of the inactivated area 72 to 78 are connected to each other at their upper and lower edges, it is easy to understand that the knit shown in Fig. 5 70 in reality have a roughly spherical shape likely. The degree of deformation is determined by the distance, i. the sequence of inactivations and the width of the inactivation areas 72 to 78 set. The wider and higher the Inactivation areas and the sequence of inactivations are, the stronger the deformation.

The inhomogeneities occurring in the periphery of the inactivation 71 are undesirable because they reduce the mechanical Stability and / or impairment of the Appearance of the knit. To the inhomogeneity the knitted fabric in the edge region of the inactivated sections as possible to keep it low, there are different possibilities. Thus, in the fabric 70, the edge stitch 80 of the knitted-through Area of the second inactivated area 74 bordered on the top left, put on catch. In the area 73 of the opposite Inactivation on the right is a stitch in the border area between active and inactivated area split 82, so that a occurring due to the inhomogeneity Hole, as shown in Fig. 1, can be covered.

Another way of reducing inhomogeneities is a weft 84 at least in the course in front of and behind an inactivated section. In this way, the fabric around the inactivated section reinforced around. When the weft 84 of a flexible Material consists, the knitted fabric around the inhomogeneous Area to be contracted around.

Fig. 6 shows an enlarged portion of an edge of a Spickels 52 as shown in FIG. 3 or an increase / decrease range 32,34 as shown in FIG. 7 is to be shown with reference to FIG. 6, which There are ways to do that at a tipple or at an increase / decrease arising inhomogeneity in the area reduce the edge of the wrapping or increase / lower edge.

In Fig. 6, the steps of the staircase 90 have the height of two courses and the width of two stitches. The illustrated Techniques to reduce inhomogeneity at the edge However, they can also be used on lower or higher levels Step height and step width are applied.

The edge mesh 92 may, for example, in a double-layered Knitted fabric on the front needle bed on the next lower stair mesh be hung while sitting on the back needle bed the next higher staircase is hung. In addition exists the possibility to use the imposed stitches of both beds too cross. As a result, the homogeneity of the knitted fabric in the range the edge increases.

At the point 94 is at the stage another horizontal Knitted edge, which later when knitting the edge portions so entangled that a larger opening in the knit is closed. Such a mesh can not just be appended horizontally by simply adding one more Mesh is knitted on the outside, but such a mesh can also be knitted vertically as shown in section 96 by not inactivating the outer needle for a stitch height becomes. Also this stitch can afterwards when knitting be pulled so that a hole is covered with it can.

Another way of closing holes or the Settlement of inhomogeneities is that the outer Mesh (s) of the step as shown in section 98 on catch is / are laid. This also makes a very dense homogeneous Knitted fabric can be achieved in the area of the edge.

It is also possible, instead of the horizontal tether mesh (s) 98 vertical mesh (s) 99 provide what the particular advantage has more volume in the edge area and holes thus well laminated.

Not shown in Fig. 6 is already shown in Fig. 1 Possibility of splitting stitches, which also causes the Volume and the density of the knitted fabric in the area of the threading edge or the increase / reduction margin can be increased. The options given may of course be included in technologically feasible way arbitrarily linked together become. By a distribution of the sections, in which one Deformation of the knit takes place (Fig. 5), can also be a high homogeneity of the knitted fabric with a desired reconciling three-dimensional deformation.

Fig. 8 shows a two-ply knitted fabric 100, in which in the upper Position the edge 102 of a spit, or an increase or Reduction relative to the edge 104 of the lower layer by at least a mesh width is offset. This causes inhomogeneities better laminated in the edge area and a better mechanical Stability of the knitted fabric achieved.

Fig. 9 shows a Eckspickel. When knitting the course A becomes the loop hanging on needle 1 of the inactivated area relocated to the active area. In addition, the on the Needles 2 to 5 hanging stitches shifted by one needle to the right. This process is repeated until all five stitches of the inactive area has been moved to the active area are. In this way, a corner is created in the knitted fabric.

In the area of an edge can be one or more weft and / or Warp threads from the courses / wales entering the edge merge to a reinforcement of the edge, so that they run along the edge. In this way the edge is reinforced. By using elastic weft or Warp threads can be better compressed the edge area and drape.

Of course, the basic techniques described above such as increasing / decreasing on the one hand and spiking on the other hand arbitrarily be combined with each other.

Figs. 10 and 11 show the technique of mitigation and reverse, respectively Procedure the technique of increasing in double-sided Crocheted on four-bed machines or twin bed machines with one auxiliary needle bed for each bed. The needles the two main needle beds or the first and second needle bed are denoted by capital letters A to H. The needles the auxiliary needle beds or the third and fourth needle bed are designated with a to h. When reducing the process flow go through from a to f. When growing, the reverse becomes Go through the process from f to a.

Fig. 10 shows the decreasing starting from the needle A of the front and rear main needle bed. The corresponding stitches are transferred to the needles a of the outer needle beds. Subsequently in step b, the outer needle beds shifted by one needle position to the right. This position is shown in step c. The needles a the outer needle beds are now next to the needles B of the inner Needle beds. Now the one on the needles a of the outer needle beds hanging stitch on the needle B of the inner needle beds hung back. Then the outer needle beds become again to their initial position, i. moved back one position to the left. This starting position is again in process step d shown. In this process step is Now the next stitch B from the inner needle beds to the outer needles b of the outer needle beds umgehängt. Subsequently the outer needle beds are moved back one position proceed to the right, as shown in step e is, so that finally reaches the position f again becomes. The stitch hanging on the needles b of the outer needle beds is now transferred to the needles C of the inner needle beds. Thereafter, the outer needle beds are returned to their original position moved back.

The method described above is thus by means of a Flat knitting machine with four needle beds a synchronous reduction or in the reverse process increase in the double-sided Scores achieved. Of course it is possible not just to put a loop on each, but it can ever according to desired staircase form of increase / decrease always respectively several groups e.g. four stitches on the same time outer beds, followed by four positions moved to the right and hung back on the inner needle beds become. As a result, in particular the edge area changes the increase / decrease.

FIG. 11 shows an alternative increase / decrease to FIG. 10. Referring to Fig. 11a, the stitches are from the inner needle beds not on the associated outer needle bed, but on the opposite outer needle bed umgehängt. That is, the left back stitch is from the needle A of the back inner Needle bed on the needle a of the outer front needle bed reassigned. In reverse, a stitch is made from the needle A of the front inner needle bed on the needle a of the rear outer needle bed umgehängt. Subsequently, in analog Referring to Fig. 10, the outer needle beds one position behind move right and the stitches from the outer needle beds relocated to the associated inner needle beds. In the process step d is the mesh B of the inner front and rear Needle beds on the needle b of the associated outer needle beds reassigned. Then turn the outer needle beds shifted one position to the right and the stitches in contrast to Fig. 10 this time cross-hung back, i.e. from the needle b of the rear outer needle bed to the Needle C of the front inner needle bed and of the needle b of the front outer needle bed on the needle C of the inner rear needle bed. In this way, a particularly intense Linking the two layers at the point of increase / decrease achieved. This method also allows a Increase if it is reversed, i. from f to a is carried out. The crossing of the edge stitches according to FIG. 11 In addition to a new look, the seat covers especially important is also more stability in the edge area and a better one Lamination of the hanging holes.

If knitting with Twinnadel, a particularly dense Structure in the area of increase / decrease / Spickels achieved when knitting in this area with all needles, while in the remaining area only with one of the two Twinnadeln is knitted. In addition, the border area can be defined by a defined Be knit tighter than the rest of the process Fabric region. If provided a left and right reduction is, these can be processed sequentially. Of course can be all holes-closing described above Techniques for both increase / decrease and for use the spinning. Another scrub of increase / decrease / spiked edges can be by single or combined Application of the techniques Split, Shot, Fang.

Claims (11)

1. A method for producing on a knitting machine a three-dimensional knitted fabric which is reinforced with weft and warp yarns in which needles are inactivated over at least one row of knitted stitches and thereafter activated again in a partial region (72, 74, 76, 78) of the needle bed, characterized in that at least in the inactivated and adjacent active region weft and/or warp yarns are inserted for reinforcing the knitted fabric and/or for closing holes at inhomogeneous places.
2. A method as claimed in claim 1, characterized in that the inactivation and subsequent activation of needles over several rows of stitches occurs successively in smaller steps up to a defined maximum width (figs. 3 and 4).
3. A method as claimed in one of the claims 1 to 2, characterized in that a weft yarn (84) is guided in the last active row of stitches before and after the inactivation of the needles.
4. A method as claimed in claim 3, characterized in that the weft yarn in the adjacent stitch(es) of the active region is placed in tuck or is tied up.
5. A method as claimed in claim 3 or 4, characterized in that the weft yarn (84) is elastic.
6. A method as claimed in one of the preceding claims, characterized in that at least one stitch is split in the border region between the active and inactive region, whereupon a split stitch is assigned to the active region and one to the inactive region.
7. A method as claimed in one of the preceding claims, characterized in that the stitches are placed in tuck (80) in the active sections which are adjacent to the inactive sections (74).
8. A method as claimed in one of the preceding claims, characterized in that the outer stitch (92) at the edge in front of an inactivated region is transferred to an adjacent outer stitch of the edge.
9. A method as claimed in one of the preceding claims, characterized in that a further stitch (94) is knitted onto the outer stitch in front of an inactivated region.
10. A method as claimed in one of the preceding claims, characterized in that an additional vertical stitch (96) is produced at a shaping edge in such a way that the outer needle of an inactivated region following an active region is not inactivated.
11. A method as claimed in one of the preceding claims, characterized in that a stitch (98) is placed in tuck which is arranged on a shaping edge and/or the edge of a widening/reduction.

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