DE1510251A1 - Device for use on stretching machines for textile fibers and similar machines - Google Patents

Description

899 Lindau (Bodensee) Your message from My message from Rennerl · 10 PoitficbKS

March 9, 1966

Antonio Fabris, Florence, via Cimarosa, 9 / Italy

Device for use on stretching machines for textile fibers η and similar machines

SXXIIXIXIXIXXXXXIIXXIIIIIIIXIIIIIIIXIXXIXXIXIIII

The present invention aims to provide an apparatus for facilitation the passage and stretching of ribbons made of wool and other natural or artificial fibers in stretching machines so-called "intersetting" reed leaves in stretching machines with a simple needle field, so-called "gill boss" and generally in

- ² - 909846/0244

Telegraph: Talk time Bank account: Postediecxkonto

4374 pit rlebllng I! by agreement Bayer. Sgtf £} a§c $ rg | a§ (B / | Q £ β ^ ^ Munich 295 25

All textile machines in which the fiber is treated by sliding needle bars, hackle combs or the like.

These known machines effect the stretching through the stretching roller and the reed leaf field, which runs in the same direction the strip of combed fibers, which is continuously moved forward by feed rollers. To stretch the tape So to achieve the reduction of its titer, the feed cylinder and the stretching cylinder have a different peripheral speed: the latter (stretching) is greater than the former (task).

The Rietblattfeld, which has the same direction as the tape, has the task of sliding the fibers towards each other accompany. The reed leaves of the field are moved in their sliding movement by screws or threaded cylinders called "vitoni", which pull their tips forward by turning. The speed of movement of the field is constant and has one Value that lies between the speed of the task cylinder and that of the stretching cylinder.

According to the present subject matter of the invention, the mutual The distance between the ridges increased progressively as they continued to move, giving them a gradual acceleration between the two 67 0244

see the said different speeds of the task- and stretch rolling is granted. It comes about in connection with this acceleration, but not necessarily dependent on it a change in the angle of the reed leaves or combs, which are perpendicular at the beginning of the field, while at the end of the same one take up an inclined position, always in the sense that the gradual transition between the different speeds of the Task and stretching is made easier.

In this way, the reed leaves or combs not only hold the fibers tight, but accompany the stretching; consequently the resistance gradually decreases towards the end of the field. thanks to This reduced resistance makes it possible to reduce the titer of the entering To enlarge the sliver, whereby the production is increased, or with the same production a stronger stretching (corresponding to a greater reduction in the titer) to ensure without changing the quality of the product.

The effect described is achieved if, instead of the usual large screws with a constant pitch, a number of threaded screws are used used with a progressively varying gait. At the same time as this change in gear, but not un-

90984 6/02 44

conditionally in mutual dependency, the angle of the thread to the screw axis is progressively increasing from Beginning to the end of the thread itself increased.

These and other features of the invention, together with the technical effects and advantages resulting therefrom, are described in the explained below with reference to an exemplary embodiment and the accompanying drawing.

Fig. 1 shows in side view the construction of a stretching machine;

Figure 2 is a top plan view of the structure of Figure 1.

The band of hackled or combed fibers A passing through the feed rollers 1 is moved forward, is stretched by the stretching rollers 2 and the reed sheet field 3 running in the same direction, the peripheral speed of the rollers 2 being greater than that of the rollers 1. The reed leaves or combs of the leaf 3 are in sliding motion offset by screws or threaded cylinders 4 called "vitoni", which, through their rotary movement, move their tips forward drag along.

909846/0244

The subject of the invention was described as such and as a trend-setting, but not a limiting example shown schematically, solely for the purpose of showing the main features. However, the object itself can be changed to different ones, always maintaining the conception of the basic characteristics Manner can be carried out without thereby exceeding the scope of the invention.

Claims

9 Q 9 8 4 ~ 6/0 ~ 2-U

Claims (4)

Claims 1. Device for use on textile fiber drawing machines with a simple field of needles and intersecting reed leaves and generally on similar machines which can handle any provide natural or synthetic textile fibers by sliding pin strips, hackle combs or the like, characterized in that a screw cylinder (4) for the transport of the needle bars (3) with a single or multiple thread Thread is present, the thread progressively changing by any value. 2. Device according to claim 1, characterized in that that the movement of the needle bars (3) with a non-constant accelerated speed thanks to the progressive distance the reed leaves or combs and the gradual transition from the vertical position to any inclined oblique position takes place. 3. Device according to claims 1 and 2, characterized in that that the progressive variation of the mutual - 7 - 9 0 9 8 4 6/0244 term distance between the reed leaves or combs and the continuous variation of their angle to the axis of the screw (4) Are features that can be carried out simultaneously or independently of one another. 4. Device according to the preceding claims, characterized marked that the progressive variation of the gait as well as that of the angle can be carried out both in the sense of an enlargement and in the sense of a reduction. S 0 9 8 A 6/0 2 4 4 Blank page