EP0574411A1

EP0574411A1 - Process for knitting tubular fabric on a straight knitting machine.

Info

Publication number: EP0574411A1
Application number: EP92903554A
Authority: EP
Inventors: Gottfried Universal M Kuehnert
Original assignee: Dr Rudolf Schieber GmbH and Co KG
Current assignee: Henkel Dorus GmbH and Co KG
Priority date: 1991-03-07
Filing date: 1992-01-31
Publication date: 1993-12-22
Anticipated expiration: 2012-01-31
Also published as: DE59208755D1; DE4107316C1; US5487282A; WO1992015739A1; EP0574411B1

Abstract

Pour réaliser dans un procédé pour le tricotage de tricots tubulaires sur un métier à tricoter rectiligne comportant deux fontures principales et deux fontures auxiliaires, ainsi qu'un dispositif de chevalement, de manière simple et en une seule passe avec le processus de tricotage proprement dit, une couture de remmaillage pour une fermeture fermée et/ou ouverte du tricot tubulaire sans bourrelet, une maille de lisière est systématiquement reportée pour la formation d'une fermeture du tricot à partir d'une fonture principale (A ou B) vers une fonture auxiliaire (a ou b), lesdites fontures sont décalées l'une par rapport à l'autre, la maille est reportée depuis la fonture auxiliaire (a ou b) vers la fonture principale (A ou B), et les aiguilles tricotent avec la maille reportée.To carry out in a method for knitting tubular knits on a straight knitting machine comprising two main needle beds and two auxiliary needle beds, as well as a headstock device, in a simple manner and in a single pass with the knitting process proper, a re-stitching seam for a closed and / or open closure of the tubular knit without bead, a selvedge stitch is systematically postponed for the formation of a knit closure from a main needle bed (A or B) to an auxiliary needle bed (a or b), said needle beds are offset relative to each other, the stitch is transferred from the auxiliary stitch (a or b) to the main stitch (A or B), and the needles knit with the stitch postponed.

Description

Process for knitting tubular goods on a flax knitting machine

description

The description relates to a method for knitting tubular goods on a flat knitting machine with two main and two auxiliary needle beds, and an offset device.

Methods of this type are known for example from DE 16 35 965 AI or DE 24 36 450 AI, which go back to the same inventor as the present subject matter. On the flat knitting machines described there, knitwear and knitted parts in tubular form were knitted, for example sweater body parts or sweater sleeves, which were cut and connected in further production steps. In particular, it was not possible with the conventional methods to produce closed knitted endings on flat knitting machines with little effort and thus economically or to carry out binding processes on flat knitting machines. Unbinding or reducing in the hose, for example for creating the shoulder parts, was in principle possible, but for reasons of inefficiency and also for this reason was not used in practice or only to a small extent because the Shoulder areas were created which are both aesthetically unsightly and disadvantageous when the clothing is worn. Conventional binding-off processes without auxiliary needle beds are known, for example, from DE 32 03 028 AI, in which a transfer process is carried out from the front to the rear needle bed or vice versa, with more than one stitch coming to lie on a needle to be knitted through a corresponding offset and this na ¬ del is then knitted.

From DE 40 06 877 AI is a method for knitting tubular goods and for reducing the tubular shape knitted goods known, in which auxiliary needle beds are also used. All stitches are transferred from one auxiliary needle bed to the needle bed assigned to the other auxiliary needle bed and then hung back again. There is an offset between the rear main and auxiliary needle bed, which are not offset from one another, on the one hand, and the front main and auxiliary needle bed, which are also not offset from one another, on the other.

All of these known methods have the disadvantage that the binding areas result in beads which severely impair both the aesthetic effect of the knitted clothing, such as a sweater or a knitted dress, and which is also disadvantageous for the user when wearing.

The invention is therefore based on the object of creating a process which does not have the disadvantages of the conventional binding process and which allows knitwear in a simple manner with flat knitting machines, the non-bulky flat connections of the front and rear side of the goods without beading enables.

Based on the method mentioned at the outset, this object is achieved according to the invention in that an edge stitch is transferred from a main needle bed to an auxiliary needle bed in order to form a knitted finish, these beds are offset from one another, the stitches are hung back from the auxiliary needle bed to the main needle bed, and the needle is knitted with the looped back stitch.

This method of reducing tubular goods leads to connections or reductions, for example when finishing in the shoulder area of flat knitting machines knitting sweaters or garments that do not have bulky areas such as beads etc. The items of clothing produced in this way are therefore attractive and pleasant to wear.

The method according to the invention is particularly advantageous in the case of items of clothing which are to be produced entirely on the flat knitting machine, as is described, for example, in DE 39 31 414 A1 by the same inventor, which has not been published beforehand. With the aid of the method according to the invention, in the case of complete or finished items of clothing such as complete sweaters or finished clothes, in one operation on the flat knitting machine, it is possible to sew off a hose on a flat knitting machine without application or bead for the hose ends, for example in the shoulder area to accomplish.

Advantageous refinements of the invention are specified in the subclaims.

Depending on how far to reduce, the process according to the invention is repeated in accordance with the number of stitches to be completed.

The edge stitches are preferably transferred between the respective front main and auxiliary needle beds on the one hand and between each of the rear main and auxiliary needle beds on the other hand. Depending on the requirements and desired knitting patterns, however, it is possible to transfer the edge stitches between the respective front main and rear auxiliary needle beds on the one hand and between each of the rear main and front auxiliary needle beds on the other hand, or alternatively alternating these two options or mixed. According to a particularly advantageous embodiment of the invention, after hanging back onto the main needle bed on the latter, the edge stitches are knitted simultaneously with a thread guide. Because of the only one thread guide, there is therefore a closed hose end.

As an alternative to this, in order to create an open tube closure according to an alternative embodiment of the method according to the invention, the edge stitches, after hanging back on the main needle beds, are to be knitted separately onto the front and rear auxiliary needle beds with different thread guides. In this way it is possible to create elegant neck areas, that is to say an open tube closure, in the case of articles of clothing, for example complete sweaters or dresses, which are knitted as a whole on the flat knitting machine. When manufacturing complete garments on flat knitting machines, the chaining method according to the invention for closed tube closure and then the chaining method for open tube termination can be used for chaining off in the shoulder area.

To increase the productivity of the machines, it is particularly advantageous if the edge stitches run on the back main needle bed and are knitted on the front main needle bed, or vice versa. This requires sledges with at least two rope locks.

A further increase in machine productivity also results from the fact that the edge stitches are subsequently reassigned after the knitting process. Flat knitting machines with carriages are required for this, in which shoulder locks are provided in addition to the knitting locks. A particularly advantageous embodiment of the invention has the following method steps:

a) the respective edge stitch on the main needle bed is reassigned to the associated auxiliary needle bed;

b) the auxiliary needle beds are displaced by one needle in the direction of the adjacent needle of the main needle bed;

c) the respective edge stitch converted onto the auxiliary needle bed is hung back on the respective main needle bed, so that the edge stitch is located on a needle of the main needle bed together with the stitch adjacent to the edge stitch, and

d) the two needles of the two main needle beds, each with the edge stitches hung back, are knitted off.

The method according to the invention for forming a knitted finish or the reducing process can be carried out on the flat knitting machine either from left to right in accordance with the embodiment described below or from right to left. However, it is also possible, in particular, to carry out the reduction process according to the invention with decoupling simultaneously from left to right and from right to left, that is to say simultaneously from the outside inwards. In this case, a thread guide must be provided on both sides of the flat knitting machine for decoupling with a closed hose end, and two thread guides must be provided on both sides of the knitted fabric on the flat knitting machine for unlinking with an open hose end his. The invention is explained in more detail below with reference to the areas of embodiment described in FIGS. 1 and 2. Show it:

Figure 1 shows the process steps for decoupling with closed hose closure and Figure 2 shows the process steps for decoupling with open

Hose termination.

The individual procedural steps taking place successively in time are to be explained with reference to FIGS. 1 a to 1 l and 2 a to 2 i. In these figures, the front main needle bed is denoted by A, the front auxiliary needle bed by a, the rear main needle bed by B and the rear auxiliary needle bed by b. The individual needles of the needle beds are numbered from left to right. For the sake of simplicity, only 10 stitches or needles per needle bed were shown in the exemplary embodiment shown. Of course, knitted fabrics with more than 10 stitches are also possible.

The respective position of the slide is symbolically shown in the figures with a large arrow pointing downwards.

First of all, the knitting process of an embodiment according to the invention when decoupling for a closed hose closure will be explained with reference to FIG.

FIG. 1 shows the last round of the tubular goods, for example a pullover, before the uncoupling or reduction in the shoulder area is to begin. Assume that the carriage is on the left as shown During the next slide run to the right, the left edge stitch, which is located on the needle 1 of the front main needle bed A, is on the needle 1 of the front auxiliary needle bed a and the stitch on the needle 1 of the rear main needle bed B is on the needle 1 of the rear auxiliary needle bed b. The carriage is now on the right side of the knitted fabric (Fig. Lb). In this position, ie during the carriage reversal on the right side, the front auxiliary needle bed a and the rear auxiliary needle bed b are shifted to the right by one needle, as shown in FIG. 1c. The sled is still to the right of the knitted fabric.

When sledding from right to left, the stitch on the needle 1 of the front auxiliary needle bed a is hung on the needle 2 of the front main needle bed A and the stitch on the needle 1 of the rear auxiliary needle bed b is hung on the needle 2 of the rear main needle bed B. The carriage is then to the left of the knitted fabric (Fig. Ld). In this left reversal position, the auxiliary needle beds a, b are reset to the basic position, as shown in FIG. As is also shown schematically in FIG. Le, the double edge stitches located on the needles 2 of the main needle beds A and B are knitted to the right during the sled run. Then the sledge is to the right of the knitted fabric. The thread guide FF was taken to the right side of the left edge stitch.

As shown in FIG. 1f, the thread guide FF is carried along from left to right again on the left side of the left edge stitches during the carriage run and at the same time the left edge stitches are each removed by the needles - S -

2 of the front and rear main needle bed A and B reassigned to the needles 2 of the front and rear auxiliary needle bed a and b. In this position of the slide and the thread guide FF, the auxiliary needle beds a and b are again displaced by one needle pitch to the right (cf. lg), so that the stitches lying on the needles 2 of the auxiliary needle beds a and b are on the Needles 3 of the main needle beds A and B are hung back when the carriage moves from left to right. If - as in the present embodiment - the slide has a knitting lock that follows the neck lock, the double stitches located on the needles 3 of the main needle beds A and B are subsequently knitted after the transfer during the slide run to the right. Then the thread guide is again to the right of the left edge stitches and the slide is now to the right of the knitted fabric, as shown in FIG.

After the auxiliary needle beds a, b have been moved back in accordance with the explanations relating to FIG. Le, the process steps then proceed as have already been described with reference to FIGS.

The process is repeated until the hose closure is finished in accordance with the specifications.

It should be pointed out that in the process steps the thread guide FF is only taken over the edge stitch area and only the edge stitches are knitted, but not the remaining stitches. It should also be pointed out that in each case only in one direction, in the exemplary embodiment shown only from left to right, but not from right to left, the front and rear edge stitches are knitted simultaneously in one slide movement, like this at _ Q _

Right-right knitting is the case. Also, only one front and one back edge stitch is transferred to the respective main needle beds A and B before the knitting process.

Although in the embodiment shown the knitting process takes place from left to right, the knitting process can of course also always be carried out from right to left, ie the reduction takes place on the right side of the knitted fabric. It is also possible to simultaneously reduce or unlink the knitted fabric according to the described knitting processes both from the left and from the right, knitting from left to right for the left side of the knitting process and from left to right for the right side Knitting is always knitted from right to left. In this case, a further thread guide is also provided for the right area of the knitted fabric.

In the method steps shown schematically in FIG. 2, an embodiment of the invention is described using the example of the chain for open hose closure. The symbols and representations of the needles and the main or auxiliary needle beds A, B or a, b correspond to those of FIG. 1.

When uncoupling a finished item of clothing, such as a complete sweater or a complete knitted dress, the shoulder area corresponds to uncoupling for a closed hose closure, as shown in FIG. 1. For the neck area, uncoupling with an open hose end is necessary, as is shown schematically below. According to FIG. 1 a, FIG. 2 a also shows the last round of tubing before decoupling for an open tubing termination. It is assumed that the slide and the thread guide FF1 for the front main needle bed A and the thread guide FF2 for the rear main needle bed B are on the line ¬ ken side of the knitted fabric, as is indicated schematically in Figure 2a. During the sled run from left to right, the edge stitches, namely the stitches on the needles 1 of the main needle beds A and B, are reassigned to the needles 1 of the auxiliary needle beds a and b (cf. FIG. 2b).

If the slide is in the right reverse position, the auxiliary needle beds a and b are shifted to the right by a needle division (see FIG. 2c), so that the stitches of the auxiliary needle beds a and b are transferred to the needles 2 of the main needle beds A and B (cf. FIG. 2d). While the slide is then in the left reverse position, the auxiliary needle beds a and b are returned to the starting position, as is shown schematically in FIG. 2e. The carriage then runs to the right and knits needle 2 of the front main needle bed A with the thread guide FF1 and needle 2 of the rear main needle bed B with the thread guide FF2. This results in a stitch or edge stitch at the front and back. After knitting, the thread guides FF1 and FF2 are to the right of the edge stitches. In the present example, the sled has shoulder locks next to the knitted locks. During the sled run to the right, during which the edge stitches are knitted, the edge stitches are subsequently reassigned from the needles 2 of the main needle beds A and B to the needles 2 of the auxiliary needle beds a and b assigned to the main needle beds A and B (see Fig. 2f). As Figure 2g shows, the auxiliary needle beds a and b offset by a needle pitch to the right and during the sled run from right to left, according to FIG. 2h, the stitch on the needle 2 of the front auxiliary needle bed a is on the needle 3 of the front main needle bed A and the stitch on the needle 2 of the rear auxiliary needle bed b on the needle 3 of the rear main needle bed B so that two needles hang on the needles 3 of the main needle bed A and B. During the sled run from right to left, the thread guides FF1 and FF2 are taken to the left side of the edge stitches.

If the slide is in its reverse position to the left of the knitted fabric (Fig. 2h), the auxiliary needle beds a and b are set back to the basic position by one needle pitch to the left. Then the carriage moves to the right and knits off the needles 3 of the main needle beds A and B, so that there is a slip stitch as edge stitches. The thread guides FF1 and FF2 are now to the right of the edge stitches and the slide is to the right of the knitted fabric (Fig. 2i).

As FIG. 2i shows, the knitting sequence is now again in the state already described with reference to FIG. 2e, only with the difference that the edge mazes are now on the needles 3 of the main needle beds A and B instead of on the needles 2 . Depending on how many stitches are to be bound off, the process described is repeated accordingly.

The invention has been described on the basis of preferred exemplary embodiments. Modifications and configurations of this embodiment are possible for the person skilled in the art, however, without thereby departing from the inventive idea. For example, the method of chaining off for closed and open hose closure one after the other, so that, for example in the manufacture of complete knitwear such as ready-to-use pullovers or complete knitwear, the shoulder section and the neck section can be carried out in a single operation on a flat knitting machine.

Claims

1. Method for knitting tubular goods on a flat knitting machine with two main and two auxiliary needle beds, and an offset device, characterized in that an edge stitch is transferred from a main needle bed to an auxiliary needle bed to form a knitted end, these beds together ¬ are moved, the stitches are hung back from the auxiliary needle bed onto the main needle bed, and the needle is knitted with the back-hung stitch.

2. The method according to claim 1, characterized in that the process is repeated in accordance with the number of stitches to be completed.

3. The method according to claim 1 or 2, characterized gekennzeich¬ net that the hanging of the edge stitches between the front main and auxiliary needle bed on the one hand and between the rear main and auxiliary needle bed on the other.

4. The method according to any one of the preceding claims, characterized in that the edge stitches between the respective front main and rear auxiliary needle bed on the one hand and each between the rear main and front auxiliary needle bed on the other hand.

5. The method according to one of the preceding claims da¬ characterized in that the edge stitches are knitted after hanging on the main needle beds on the latter at the same time with a thread guide.

6. The method according to any one of claims 1 to 4, characterized ge indicates that the edge stitches are knitted after hanging back on the main needle beds, each separately on the front and rear main needle bed with different thread guides.

7. The method according to claim 6, characterized in that the edge stitches on the rear main needle bed vorlau¬ fend and trailing on the front main needle bed, or vice versa, are knitted.

8. The method according to claim 6 or 7, characterized gekennzeich¬ net that the edge stitches are each reassigned after the knitting process.

9. The method according to one of the preceding claims, characterized by the following method steps:

b) the auxiliary needle beds are displaced by a needle in the direction of the adjacent needle of the main needle beds;

c) the respective edge stitch converted to the auxiliary needle bed is hung back onto the respective main needle bed so that the edge stitch together with the stitch adjacent to the edge stitch is located on a needle of the main needle bed and - / rd) the two needles of the two main needle beds, each with the edge stitches hung back, are knitted.

10. The method according to claim 9, characterized in that the auxiliary needle beds are set back to the starting position and the process steps a) to d) are repeated according to the number of stitches to be knitted.

11. The method according to any one of claims 1 to 5, 9 or 10, characterized in that the knitting of the needles of the two main needle beds is carried out simultaneously with a thread guide with each of the edge stitches hung back.

12. The method according to any one of claims 1 and 5 to 10, characterized in that the knitting of the two needles of the two main needle beds with the back-hung edge stitches for the front and rear main needle bed is carried out separately with different thread guides.

13. The method according to any one of the preceding claims, characterized in that after the knitting and the

Resetting the auxiliary needle beds, the respective edge stitches are subsequently reassigned from the main needle beds to the auxiliary needle beds.

14. The method according to any one of the preceding claims, da¬ characterized in that the reducing process takes place from left to right or from right to left. - I t-

15. The method according to any one of claims 1 to 13, characterized in that the reduction process takes place simultaneously from left to right and from right to left from both sides of the knitted fabric.