DE716949C - Process for the production of a draftable sliver from a strand of synthetic threads - Google Patents

Description

Process for the production of a draftable sliver from a Artificial thread strand Various processes have already become known which allow the Cutting a strand of synthetic thread or the like, a so-called cable, into fiber sections and their direct ü, aim in a warpable sliver.

This purpose is also pursued with the method nadli of the invention, which is characterized by its simplicity. This differs from that the acquaintance by the fact that the strand is tossed around or to and fro and thereby fiber bundles are cut off or that from the strand by means of a all around the knife's F # s bundle are cut off and the bevel -b-ündcl under the effect of its centrifugal force or the impact force of the Knife on a near the cutting point, with needle) n 'oAgl. provided Conveyor can be veiled with a partial overlap the speed resulting from the successive fiber bundles is moved forward will.

Although it has already become known to use freshly sprouted fibers Help to blow air on a conveyor belt, but this is exclusively about conveying the goods regardless of the fiber layer.

Then, it is also already become known, a synthetic thread strand for the purpose of stacking iii a passing of a arts fixed blade disc at its center einzuführeai so that it is thrown through a radial bore of the disc to the outside 'case are cut off by the knife fiber bundles without - Alignment in. The spots are collected.

To carry out the method according to the invention, one can operate the devices described below and shown in the drawings.

Fig. I shows one of these devices in elevation and generally the same device in plan view. The cable, 4 coming from the spinning cans or from the spinning machine is passed over the pair of rollers B through the hollow hinge C to the knife of the cutting device D, which is fed by springs U with the hose , -, armC is connected. By flapping the arm C back and forth driven by the gear V, the strand of thread A is exposed to the effect of centrifugal force, so that it emerges at the opening E on the flapping arm. In its reverse position, the arm C strikes with the cam F of the cutting device D on a base G, pressing the knife of the cutting device against the strand of thread # whereby the bevel is cut. The knife can also be operated by a linkage. As a result of the centrifugal force, the fiber bundle LR in the stretched state is violently hammered into the needle field H of the needle roller J , which is located a short distance next to or below the end position of the lay hair, and remains there in an orderly position until the fiber sliver S has the desired thickness. The rods X of the lifting basket lift the fibers out of the needle field and feed them in an orderly state as a razor ribbon to the feed roller pair L of a needle rod section. The rods are K leads individually loosely fixed in two lateral grooves M N signs charged and the needles are carried derNadel- valze # 1 moves. The strip running out of the needle bar is further processed in a known manner.

Fig. 2 shows a further device in elevation and Fig. 2a shows the same device in plan view. Instead of a striking arm, a rotating disc is provided in which the cable A is inserted in the center of the disc 0 and outwards through a radial hole P. is thrown. It is cut off at the exit point on the circumference of the centrifugal disk by a fixed knife Q. The section R is caught by the needle roller arranged below the knife. The further processing is the same as described above.

The device can also be designed so that by a = running or knife flicking back and forth from a freely hanging cable bundle of fibers cut off and these are thrown onto the conveyor.

Figs. 7 and 8 show such a device in side view and top view. Between the delivery group B, the cable is passed through a funnelE and outside of the funnel is separated by the cutting device that acts horizontally and performs either a circular or reciprocating movement and is thrown onto the needle fieldH by impact force.

In the sliver S wrapped in the needle field H, the fiber bundles can be arranged differently depending on the arrangement of the roller J relative to the cutting device and depending on the movement of the needle field H. Fig. 3 shows the inclined position of the needle roller J in relation to the cutting device from Fig. Ia with the fiber bundle layer generated by this arrangement in a top view. Depending on the speed of the needle roller, the fiber bundles can simply be laid next to one another and several times on top of one another.

Fig. 4 shows the inclined position of the needle roller 1 in relation to the cutting device from Fig. 2a and the fiber section layer produced thereby in a top view.

Then Fig. 5 shows schematically the fiber layer in a side view, produced with the device according to Figs. I and 2 with uniform movement of the needle field H.

Finally, Fig. 6 shows schematically the fiber layer in a side view, produced with the devices according to Figs . H. The needle roller J with the needle field H does not move continuously, but rather two circumferential parts forwards and then backwards again two times.

The width of the sliver S is determined by moving it back and forth. the needle is regulated in the direction of the arrow T.

Claims (2)

PATENT ANSPXÜCHE: 1. A method for the production of a warpable Fagerhandes from a strand of synthetic thread o The fiber bundles are cut off under the effect of their centrifugal force or the impact force of the knife onto a conveying device arranged near the cutting point and provided with needles or the like, which with a partially overlapping fiber bundle results in successive fiber bundles Speed is moved forward. 2. The method according to claim i, characterized in that the one needle. roll, or the like Kratzenbarid sawn standing Fördiereinrichtung is moved sideways in addition to and fro. 3. The method according to claims i and 2, characterized in that the fiber bundles are hurled onto a conveyor device running obliquely to the strand direction at the shredding point.