SU859496A1 - Apparatus for producing reinforced thread - Google Patents

Description

(54) METHOD FOR OBTAINING REINFORCED THREAD

The invention relates to the textile industry, concerns methods of combining the processes of spinning and spinning, and 5 can be used in the manufacture of twisted reinforced yarns.

A known method of obtaining a reinforced yarn by feeding a pair of fibrous sliver with a feeding pair to a core iO yarn, twisting the fibrous weft-. The main thread on its section in front of the entrance to the canal of the hollow spindle with the subsequent twisting with the thread converging on the floor spindle when the threads are passing through the spindle canal and winding on the output package Uj

The disadvantage of this cnoco6ia is that the reinforced filament does not expose a sufficient wear-resistant fiber coating, for strengthening which the reinforced filament is wrapped with a screwed thread. During the reinforcement process, the core thread is often damaged. In the manufacture of 25 three-component bulk yarns, the core thread has non-insulated sections, since the fibrous sliver can be arranged parallel to the core thread and loop-like jg

The purpose of the invention is to increase the strength and wear resistance of the thread.

This goal is achieved in that the length of the twisting section of the core yarn is chosen to be not less than the length of the sliver fibers at the entrance of the hollow spindle before entering the cannula spindle, while stretching is done on this section.

In addition, when the fiber sliver is fed, its fibers are monitored with the help of a distributed friction force field, the gradient of which is chosen to decrease in the direction of the muzzle movement.

FIG. 1 shows a general scheme of the device for carrying out the proposed method; 2 is a diagram of the connection of components reinforced

threads.

rod thread 2 unrolled from package 1 is guided through a channel of a rotating hollow spindle 3 on which package 4 is installed with a screwed thread 5. Exhaust device outlet pair 6 serves a fiber sliver 7 to rod wire 2, which is controlled in section A using a distributed field forces

friction with a decreasing gradient in the direction of the sliver. The friction force field is created by a strap pair 8. In section B between the strap pair and the core thread, having a length equal to the greatest staple length of the sliver fibers, the latter is moved without controlling the fibers. The friction force field in this area is practically absent, since it is created here only due to the tenacity and non-parallel arrangement of the fibers.

The core thread is subjected to spurious torsion up to the elastic limit by the screwed thread 5, which rotates when it comes out of the rotating spindle of package 4. 9 hollow spindles. The rear ends of the sliver are still in the zone of action of the distributed field of friction, therefore the transition of the fibers to the core thread is carried out under tension.

The length of the section In the twisting of the stubble yarn is measured by a fibrous sliver, measured along a helix along the fibers and selected at least equal to the length of the sliver fibers. The core thread is moved at a speed exceeding the feed rate of the pulley by 0.1-2.0%, and the additional thread is pulled out at section B and B. The rod thread twisted by the bow is twisted with thread 5 when the threads pass through to the shaft .reteren.

Inside the hollow spindle, redistribution of the twist occurs as a result of the rod thread spinning in the opposite direction to the spindle before the spindle enters, because the number of spins of the core thread before the spindle entrance is much higher than the number of revolutions of the sliver around the core wire in section B. the fibrous coating layer unwinds and rewinds the core thread, but in the opposite direction. The adhesion of the fibrous coating and the core thread is ensured due to the roughness of the latter and the pressure on the fibrous coating of the turns of the screwed-on thread 5.

the formed reinforced thread 10 is withdrawn by a pair of diverting rollers 11 and is wound on the output package 12. In the reinforced thread, the core thread has zero twist with actual twist of one direction of the first and second layers of the coating.

The proposed method allows to expand the range of reinforced yarns by applying a second layer of coating, to give both layers of coating a real twist in one transition and to obtain reinforced yarns with increased strength and wear resistance, since the fibers of the first fiber layer do not have straightened, stretched, and pressed against the second coating layer. In addition, the core yarn is not damaged during the reinforcement process, and low grade raw materials can be used as the coating.

Claims (3)

1. A method of obtaining a reinforced yarn by feeding a pair of fibrous sliver with a feeding pair to a core yarn, twisting a yarn with a fibrous sliver of a core yarn at its section before entering the hollow spindle channel, followed by twisting with a yarn on the floor spindle, while passing the yarn through the spindle channel and winding on the output package, characterized in that, in order to increase the strength and wear resistance of the reinforced thread, the length of the twisting section of the core thread of the fibrous sliver before entering the hollow spindle channel choose equal to no less than the staple length of the wire {sliver, while the sliver is subjected to stretching at this site. 2. A method according to claim 1, characterized in that, when feeding the fibrous sliver, the fibers are monitored using a distributed friction force field. 3. The method according to claim 2, which means that the gradient of the field of friction forces is chosen to decrease in the direction of movement of the sliver. Sources of information taken into account in the examination 1. Patent of England No. 1312367, 55 cl. D 1 W, publ. 1973.