DE2124215C3 - Process for the production of pile fabric on a Raschel machine - Google Patents

Description

The invention relates to a method for the production of pile fabric au 'a Raschel machine with in one Fontur latch and pin needles arranged alternately on separately controllable bars in the case of the Pin needles pile loops are placed.

In one, in the DD-PS 29 7 ■ 1 described This type of procedure is carried out with two fountains in such a way that from the single pile rail Pile loops are placed over the pin needles opposite the back of the latch needles will. A double-faced pile fabric is intended to be produced in this way, but it is not specified whether the method also uses a one-sided fabric Pile fabric can be produced.

Furthermore, DE AS 11 88 754 is a process for the production of pile fabric on a warp knitting machine with pointed needles known in the one with a Fontur is worked in such a way that during a first knitting cycle on every second needle from both Pile threads as well as stitches can be worked from ground threads and during the following second knitting cycle the stitches are only formed from the ground threads, whereas the pile threads are formed from those between the Wicker needles arranged empty needles are placed, of which they are then at the following Knitting cycle are thrown off because then no new thread is laid over these needles. The one after this Process produced goods have the disadvantage that pile loops are created only in every second row of stitches.

Further processes are one-sided door manufacturing pile fabrics on Raschel mil iweifonturigen a tongue and a Stiflnadelfonliir bek.innl; the pile goods produced in this way can have pile loops in any row of rows. The pile height is determined by the distance between the two formations from one another, which is often not variable.

The Frfimliiiii! lirgt (lic task / ugiiiride. a

Disadvantages eliminated and which allows the production of one-sided pile fabric in a simple manner.

This object is achieved by the features mentioned in the characterizing part of claim 1

By laying the pile threads twice during a knitting cycle, the manufacture of a pile fabric is achieved enables which has pile loops in each stitch row. Since the length (height) of the pile loops of the distance of the pen needle over which the respective

ίο pile loop is laid from the last one made Integration into the bottom of the fabric is determined, the height of the pile loops can only be adjusted in a simple manner be determined by appropriately controlled offset of the pile rail in question.

Preferred further developments of the invention are given in the subclaims.

An exemplary embodiment of the invention is explained below with reference to the drawing F i g. 1 is a diagram of the knitting tool movements in a stitch formation cycle,

F i g. 2 the knitting tools at a main shaft position of approximately 350 ° and

F i g. 3 the knitting tools with a main shaft position of 360 "= 0 °.

In the movement diagram according to FIG. 1 are the movements of the latch needles 1, the pin needles 3, the Guide rails S, 6, of the cutting comb; 4 and the striking plate 7 during a main shaft revolution shown from 0 to 360 ° of almost the same movement sequence also arises if the Raschel machine is without Impact plate 7 works

As FIGS. 2 and 3 show, there is only one Needle contour available, alternating latch needles 1 and pin needles 3 on separately controllable

Bars 8.9 are arranged.

From the movement diagram according to FIG. 1 it can be seen that the following during a knitting cycle Work phases take place: In the starting position at about 350 ° (Fig. 2) the latch needles are 1 * i> f at their deepest Point about 2 mm below the knock-off edge of the milling sheet 2. You have just knocked off that The heads of the pin needles 3 are still above the knock-off edge of the milling sheet 2 and are still entwined with the pile loops, the second ends of which (the first is in each case in the previous Stitch row) have just been tied into the wales by the latch needles I. The comb plates 4 are located on the

Latch needles 1 almost at the end of their way forward. The guide rails S and 6 are in their foremost Position and finish the last underlay of the

previous cycle of action.

At 0 ° or 360 °, the latch needles 1 have the

Increase started, are located approximately at the level of the cut-off edge of the milling sheet 2. Only now have the pin needles .1 one movement to the lowest point about 2 mm below the knock-off edge of the milling sheet 2 executed (Fig. 3), and they wrapped around

M) Pile loops have been released and are straightened out into their normal position in the pile fabric.

Then latch needle I and pin needles 1 rise like this and that they are almost at the same height three-quarters of the way to / around the highest point during the

h'i goods take-off and the weft comb 4 the knitted web and slide the stitch files that were previously in the needle head along the shaft of the needles I.

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At about 60 ° latch needle 1 and pin needles 3 to are rose to its highest point.

At about 72 ° the guide rails 5, 6 swing backwards through the needle alleys. The pile rails 6 and only these now make a first consideration of the pin needles 3 and thus form the new pile loops.

At about 144 ° the guide rails 5 and 6 are now swung forward again through the needle gas fln, but not to the extreme point, but only so far, that all pile loads. "! leading guide rails 6, all in front the striking plate 7 are arranged, can perform a first underlay of any length. from the length of these underlays depends on the height of the pile loops, with large underlays being high and shorter underlays result in short pile loops.

After completion of the first underlay, the guide rails 5, 6 swing all the way back. so takes place at about 216 ° the second consideration of both the Pile rails 6, as well as the mesh-forming base rails 5, via a needle on the Latch needles 1.

All guide rails 5, 6 now swing close to the front again, delaying theirs about halfway Movement when the Florlegeschienen 6 are in front of the latch needles 1 to the impact plate 7 the Possibility to give all pile threads, which over the Latch needles 1 are placed under the tongues of these needles 1 to press, which then involved be made without a stitch.

After the striking plate 7 has passed its lowest point and begins to rise again, the guide rails 5, 6 swing further forward, so that the threads of the base rails 5 into the Tongue needle hooks reach. The comb 4, which has been in the foremost position since then, also begins to swing backwards.

After the penultimate or last guide bar 5 has passed the needle contour when swinging forward, this begins to lower itself, and in different ways.

ίο The latch needles 1 continuously lower themselves into their lowest position. In doing so, the tongues of the stitch loops on the needle shafts closed.

During the downward movement of the latch needles 1, the movement of the pin needles 3 is delayed so that while the latch needles 1 at the lowest point about 2 mm below the knock-off edge of the milling sheet 2 have arrived and have knocked off, these are still a few mm above the knockdown edge and the Hold the pile loops under tension while they be involved by the latch needles 1. This is necessary to ensure that the pile loops are formed evenly and well and are anchored in the basic fabric before they are removed from the Pin needles 3 are released.

By appropriate offset of the pile rails 6, it is possible that in a row of loops Pile fabric, e.g. B. 3 Florlegeschienen 6 simultaneously 3 different FIorschlingen heights are made can.

1 sheet of drawings

Claims (3)

Patent claims: 1. Process for the production of pile fabric on a Raschel machine with latch and pin needles arranged alternately in a font separately controllable bars, in which pile loops are placed on the pin needles, thereby characterized in that a single font is used in such a way that during a knitting cycle to form a row of stitches the pile rail a first consideration of the Pile thread over the pin needles and a first underlay and that then pile and base rail a second consideration make the pile and ground threads over the latch needles. 2. The method according to claim 1, characterized in that arranged with a between the pile rails and the base rails After the second consideration, knock the pile thread under the tongues of the latch needles to be printed 3. The method according to claim 1 or 2, characterized in that the pin needles opposite the Latch needles are moved downwards with a delay.