DE4439395A1 - Knitting process - Google Patents

Abstract

A process is disclosed for knitting a knitted fabric, in particular a shaped fabric, on a flat knitting machine. The edges (A, B) are formed on at least one side of the knitted fabric by a constantly increasing number of deactivated needles then by a constant decreasing number of deactivated needles per stitches course and the edges (A, B) are interconnected during the knitting process. In order to obtain a very stable and uniform interconnection between the edges over the whole interconnecting area, a float stitch is formed on at least one of the deactivated and/or activated needles of an edge (A, B) and the float stitch is knitted when the edges (A, B) are interconnected.

Description

The invention relates to a method for knitting a Knitted fabrics on a flat knitting machine, taking little at least one side of the knitted fabric edges by a steady increasing number of deactivated and then by a steadily decreasing number of deactivated needles per Ma line formed, and the edges during the knitting the process.

From a lecture given at the "Textiles in the automotive industry "of the VDI, from 30th to 31st of October 1991 in Düsseldorf and published in ITB Fabric Forming 2/92, is such a process related the manufacture of knitted fabrics for motor vehicle seats known.

Especially when the angle between the edges is large, for example 45 ° and above, result in this knitting process in the connection area of the edges Holes along the edge connection, the hole size increases with increasing angle between the edges.

This fact is well known and related with the discussion of the state of the art in EP 361 854 A2.

EP 361 854 A2 describes a method for avoiding this these holes associated with a double jersey ge described in which an on along each edge fold jersey braid and these braids are connected will. There is a risk that the stitches especially when using wider borders during of the knitting process.

Based on the knitting process mentioned at the beginning the invention has for its object a Strickver drive to specify in particular for a knitted fabric holes in the edge connection area are avoided.

The stated object is thereby ge triggers that on at least one of the deactivated and / or activated needles of one edge at least one Catch handles formed and when connecting the edges with is knitted. By providing catch handles on at least some deactivated and / or activated Na edge and the subsequent knitting a uniform, non-perforated connection between the edges. This avoids that the connections that are also used in knitted fabrics holes are exposed to particularly heavy loads arise that make the knitted fabric transparent and / or affect the strength and density of the knitted fabric.

According to a particularly advantageous embodiment of the Er invention are compared to at least two each ing needles of the two edges tuck handles formed when the edges are joined together. On both opposite edges there will be ago tuck in both knitting directions, so that when knitting, at least double the number of Tuck handles, possibly in addition to stitches to be knitted. In this embodiment, so at for example in addition to a stitch and a catch on one edge another tuck on the other Edge formed, and then the stitch and the two handles knitted together.

According to a further embodiment of the invention on the edges all the more needles with catch handles in each a needle, the larger the angle between the edges or with respect to the side edges of the  Knits is. This also applies to the case if the edge is not linear, but an arc is. In the area of the arcs where the tangents the arches at a smaller angle with each other or with the Including course direction are fewer needles with tuck handles required as in the areas where de the angle between the two tangent arches Edges or between the tangent and the stitch row direction is larger.

It is particularly advantageous if at an angle of 0 to 45 ° between the course direction and one Edge one or two tuck handles are formed. At a Angles of 45 ° and above are preferably two and more tuck handles formed. This also results in large angles between the course direction and egg even edge connection areas without solder across the entire connection area.

According to a very advantageous embodiment of the inven The knit is used as a double jersey knit knits. It is also particularly advantageous if additional Lich to a primary knitting thread with which, for example The double jersey structure is knitted, a wide one rer knitting thread is knitted, and with this further Knitting thread in the formation of edges in a corresponding manner at least one handle on at least one deakti fourth or activated needle and at the conn the edge is knitted. That from the rest Partial knitted fabric formed is therefore the same, subjected to the knitting method described above in order to Avoid pitting.

In connection with knitting another knitting fa dens it is very advantageous if that with the further Knitting thread formed tuck handle when connecting the Kan additionally with stitches and / or tuck handles of the pri  knitted thread are knitted. This leads to egg ner further stability and tightness of the connection area.

An embodiment in which the further one is advantageous Knitting thread only on the front or the back Needle bed is knitted. This is especially for single-colored knitted fabrics are suitable. In contrast, the Strickfa knitted on both needle beds when a jacquard Knitted fabric is provided.

An advantageous structure for the primary and / or the Another knitting thread is the twill structure. The body preferably alternate and lead to one firmer, non-curling knitted fabric.

According to a further, particularly advantageous further development tion of the invention is the comb distance at a given Needle division of the needle beds of the knitting machine larger than chosen for conventional knitting. If more normal wise for machines with a ten division with one certain ridge spacing is knitted according to this Embodiment of the invention a larger comb distance chosen for the division that a coarser division, z. B. corresponds to a machine with figure of eight division. This Trait helps reduce the risk of a knitting line ßens further decrease.

The method according to the invention is in particular for Knitting a form knitted fabric and with a special advantage for a cover for a seat, especially one Vehicle seat, suitable.

The invention as well as further details and advantages is or will be based on especially before partial embodiments with reference to the Figures explained. Show it:  

Fig. 1 is a schematic representation of a knitted fabric with edge formation and

FIGS. 2a to 2c is a schematic representation of 28 knitting processes to explain the method according to the invention.

The knitted fabric according to FIG. 1 has on its left side an indenting edge A and an increasing edge B, which are formed in a known manner and are connected to one another during the same knitting process. The detailed knitting processes for forming the decreasing and increasing edge A, B and their connection to one another are described below with reference to FIGS. 2a to 2c.

FIG. 2a extends with its figure parts 2 to 2 c on three sides and figure showing sequences of Strickvor transitions for explaining the invention Strickver driving.

In the figure, the needles 1 to 10 of the front needle bed V and each of the rear needle bed H are shown for each knitting stroke. No edges are provided on the right side of the knitted fabric, so this knitted side is uniform perpendicular to the carriage running direction, while the edges and the edge connections are knitted on the left side of the knitted fabric, as will be explained in more detail below.

In the example of the schematically illustrated method, a two-system flat line machine is used, the carriage running direction being shown on the right side of the knitted fabric with corresponding arrows. Due to the two systems, there are always two knitting processes per slide stroke. The individual knitting operations are numbered 1 to 28 , to which reference is made below.

During the process 1 with the carriage running from right to left, a further or additional knitting thread 30 in a twill structure is knitted with a knitting process on every second knitting needle on the front needle bed V up to the needle 8 . With the trailing cam system according to operation 2 is again bed from right to left with the needles 1 to 7 on the front needle or a double jersey structure knitted with the needles 1 to 8 on the rear needle bed. At the closing slide stroke from left to right, a catch handle is placed during the knitting process 3 on the needle 9 of the front needle bed and during the process 4 on the needle 10 of the rear needle bed. According to the knitting processes 5 and 6 from right to left with the additional thread 30 only up to the needle 6 of the front needle bed and in the process 6 with the primary thread only up to the needle 7 of the front needle bed. The other needles 8 and following remain inactive, so that a reduction is carried out and an engaging edge is formed. At the subsequent carriage stroke from left to right tuck loops are placed in the needle 8 of the front needle bed, and during the process 8 in the needle 9 of the rear needle bed 7 during the process again. During the operations 9 and 10 with slide stroke from right to left, the twill structure is knitted from the additional knitting thread 30 only up to the needle 4 , so a reduction by two needles was carried out so that the needles 5 and the following remain inactive. In the process 10 for the knitting of the primary thread 31 in a double jersey structure, the knitting process takes place on the needles 1 to 5 and, in addition, a tuck handle is placed on the needle 6 of the front needle bed.

The diminishing or indenting process and formation of the indenting edge A is now complete. In the following processes, there is again increasing knitting and thus the formation of the increase edge B (see FIG. 1).

As can be seen on the process 11 with the direction of the slide from left to right, the twill structure is knitted with the additional thread 30 on the needles 1 to 5 of the front needle bed, with a Fanghen angle being placed on the needle 7 . In the trailing system according to process 12 , the double jersey knitted fabric is knitted with the primary thread 31 on the needles 1 to 6 of the front and rear needle bed, and a tuck handle is placed on the needle 8 of the rear needle bed. On the return stroke from right to left, the body structure is knitted with the needles 1 to 6 in front of the needle bed using process 13 , and the double jersey structure with the needles 1 to 5 of the front and with the needles 1 to 6 in process 14 6 rear needle bed, knitting a tuck on needle 7 of the front needle bed. During the subsequent sled stroke from left to right, the body structure is knitted on the front needle bed with the needles 1 to 7 according to operation 15 , where a catch handle is placed on the needle 8 of the front needle bed. So there is an increase again. Also with the primary thread 31 , the double jersey structure according to operation 16 is increasingly knitted with the needles 1 to 6 of the front needle bed and 1 to 7 of the rear needle bed, an additional catch handle being placed on the needle 9 of the rear needle bed .

The process 17 corresponds to the process 13 , while the process 18 shows a further increase in the double jersey structure, which is knitted there with the needles 1 to 7 of the front and rear needle bed. A catch handle is placed on the needle 8 of the front needle bed. The process 19 with the carriage stroke direction from left to right again shows an increase in the twill structure by knitting the further knitting thread with the needles 1 to 7 of the front needle bed, an additional handle being placed in the needle 9 . With the same sled running direction from left to right, an increase is also carried out according to process 20 for the double jersey structure, namely knitting on the needles 1 to 8 of the front and rear needle bed. At the same time, a tuck handle is placed on the needle 10 of the rear needle bed. With the processes 21 and 22, the body structure with the needles 1 is knitted to 8 abge on the front needle bed, while the double jersey structure having the Na spindles 1 to 7 of the front needle bed and the needles 1 to 8 of the rear needle bed knit becomes. A tuck handle is placed on the needle 9 of the front needle bed.

In the subsequent slide stroke from left to right, in turn, namely knitting with the needles 1 to 9 on the front needle bed according to operation 23 , a catch handle being placed on the needle 10 of the front needle bed. During operation 24 , the double jersey operation is knitted with needles 1 to 8 of the front and 1 to 9 of the rear needle bed, and a tuck handle is placed on the needle 11 of the rear needle bed.

With a sled stroke from right to left, the body structure is knitted with needles 1 to 8 of the front needle bed according to operation 25 and the double Jer sey structure with needles 1 to 9 of the front and rear needle bed according to operation 26 , knitting on the Needle 10 of the front needle bed a tuck is placed. In the subsequent knitting operation 27 with the carriage running from left to right, a further increase is carried out by knitting the twill structure on the needles 1 to 9 of the front needle bed. At the same time, a tuck handle is placed in the needle 11 of the front needle bed. The process 28 shows the knitting of the double jersey knitting process with the needles 1 to 10 of the front and rear needle bed and the insertion of a catch handle into the needles 12 on the rear needle bed.

The processes are now repeated depending on the ge desired knitting properties and given knitting expire.

As already mentioned, operations 1 to 10 result in a narrower knitting of the knitted fabric, so that the indenting edge is thereby formed. During the before gears 11 to 28 is knitted wider, so that this forms the increasing edge. During the knitting, however, the connections between the edges are also knitted.

As can be seen directly from FIG. 2, and as has been explained above, tucking handles are formed on the needle 8 of the front needle bed during the knitting processes 7 , 15 and 18, respectively. When knitting according to operation 20 , these tuck handles are knitted with, so that in this case a total of one stitch and three tuck handles are knitted. This knitting additional tuck handles results in a much more compact, denser structure in the connection area so that holes do not arise.

In a corresponding manner, tuck loops have been formed on the needle 9 of the front Na delbetts during the knitting processes 3 , 19 and 22 , which are knitted during the knitting process 23 . This in turn contributes to a dense and hole-free connection area.

As previously explained, three tuck handles, which were inserted into the needle 8 during the knitting operation 7 , 15 and 18, are knitted together with a stitch on the needle 8 with the process 20 . Similarly, during the knitting process 23 on the needle 9 three Fanghen kel, which are formed during the knitting processes 3 , 19 and 22 , knitted together with a stitch.

During other knitting processes, only two tuck handles are knitted together with a stitch. Examples of this are the tuck handles inserted into needle 10 of the rear needle bed during operations 4 and 20 , which are knitted together with the stitch lying on this needle during operation 28 . Another example of knitting a stitch together with two tuck handles are the tuck handles formed during operations 8 and 16 on needle 9 of the rear needle bed, which are knitted together with the stitch lying on this needle according to operation 24 . The two examples mentioned above relate to the knitting of tuck handles and stitches of the primary thread 31 , that is to say during the knitting of the double jersey structure.

Another example of the knitting of two tuck loops with one stitch results from the tuck loops with the further knitting thread 30 or the primary thread 31 inserted into the needle 7 of the front needle bed during the operations 11 and 14 , these two tuck loops together with the The stitch 7 of the primary knitting thread 31 lying on the needle 7 of the front needle bed is knitted according to the knitting process 18 . In this example, a tuck handle of the primary and further thread 31 , 30 is knitted with a stitch of the double jersey structure. A corresponding process of knitting two tangs of the primary or secondary thread 31 and 30 with a stitch of the primary thread results from the inserted in the needle 9 of the front needle bed Fanghen kel according to the knitting operations 23 and 26 , which together with that on the needle 10 of the front needle bed stitch are knitted according to operation 28 .

An example of knitting only one tuck handle with one stitch is shown in FIG. 2 using the tuck handle inserted into needle 8 of the rear needle bed during operation 12 , which is knitted with the stitch on needle 8 of the rear needle bed according to operation 22 .

The knitting processes shown in FIG. 2 or just a subset thereof can be repeated in any number without the individual rows of knitting having to be programmed individually. The repeats then result in a simple manner in the knitting processes over the entire edge or connection length, connection and edge structures being achieved in a uniform, dense and hole-free design.

In the case of the described and illustrated schematically game of a knitting sequence according to the invention Knitting processes were only used in some of the knitting processes Tuck. However, it is also possible to do more or to put less tuck handles. In the illustrated off example, the edges showed an incline of each because of 67.5 °, based on the direction of the course. At a larger angle, preferably at wide additional tying loops are placed around the knitting processes more common at larger angles Compensate for holes. Accordingly, also at smaller angles than 67.5 ° less tuck handles than with illustrated and described embodiment ge be chosen.

The knitting method according to the invention is particularly for the form knitting suitable, it was related to used in the knitting of automobile seat covers and gave very good results.

Claims (14)

1. A method of knitting a knitted fabric on a flat knitting machine, wherein edges are formed on at least one side of the knitted fabric by a continuously increasing number of deactivated and then by a continuously decreasing number of deactivated needles per stitch row, and the edges are connected to one another during the knitting process, since characterized in that at least one tuck handle is formed on at least one of the deactivated and / or activated needles of an edge and is knitted when the edges are connected. 2. The method according to claim 1, characterized in that that on at least two opposite each other Needles of the two edges tuck handles are formed the abge when joining the edges together to be knitted. 3. The method according to claim 1 or 2, characterized records that at the edges the more needles with Tangs are formed in one needle each, the larger the angle between the edge and the dimension direction of the knitted fabric. 4. The method according to claim 3, characterized in that at an angle of 0 to 45 ° between the Ma direction and one edge at most two Tuck handles are formed. 5. The method according to claim 3, characterized in that at an angle over 45 ° between the stitches row direction and one edge at least two catches handles are formed.   6. The method according to any one of the preceding claims, characterized in that the knitted fabric as a double Jersey is knitted. 7. The method according to any one of the preceding claims, characterized in that in addition to a pri another knitting thread with which in a corresponding manner at Kan tenbildung at least one tuck on at least formed of a needle and when joining the edges can be knitted. 8. The method according to claim 7, characterized in that that those formed with the further knitting thread Catch handles when connecting the edges with Stitches and / or tangs of the primary knitfa dens are knitted. 9. The method according to claim 7 or 8, characterized records that the further knitting thread only on the front or back needle bed is knitted. 10. The method according to claim 7 or 8, characterized records that the further knitting thread on both Na is knitted. 11. The method according to any one of claims 7 to 10, characterized characterized in that the primary knitting thread and / or the other knitting thread is knitted in twill structure becomes. 12. The method according to any one of the preceding claims, characterized in that for a given needle division of the needle beds the comb distance greater than is selected for conventional knitting.   13. The method according to any one of the preceding claims, characterized by knitting a formge knits. 14. The method according to any one of the preceding claims, characterized by knitting a cover for a seat.