JPS5812376B2 - High-quality food. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for forming an oriented fiber aggregate by aligning and adsorbing separated and flying short fibers onto a net-like collection surface.

By making the supplied fiber fly while splitting it and passing it through a slit with a width shorter than the fiber length along with an air flow, and collecting it on a net-like collection surface provided close to the slit, the fiber axis is The present inventors have already proposed a method and apparatus for forming a fiber aggregate whose arrangement direction is aligned in one direction.

This method and device can efficiently obtain an oriented fiber aggregate at high speed, and by making the long sides of the slits have a length according to the fiber length, the fiber length can be adjusted from short to relatively long fibers. It is excellent in that it can be oriented in the same way regardless of the situation.

Furthermore, it is possible to spin yarn at high speed by running the net-like collection surface at high speed and taking up the fiber bundles adsorbed on the collection surface while rolling them around the axis. , the above-mentioned method and apparatus can be very effectively used for such high-speed yarn spinning, that is, open-end spinning.

The present invention provides a method and an apparatus for forming the above-mentioned fiber aggregate, which further improves the fiber orientation, which greatly affects the quality of the fiber aggregate. The flying fibers from the final roller of the flying part to be moved are discharged almost linearly through a duct extending in the tangential direction of the roller, and the long side direction is a slit along a plane perpendicular to the axis of the final roller. It is characterized in that it is adsorbed and collected from an oblique direction onto the net-like collection surface through the filter.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 and 2, the fiber supply unit 1 includes a guide 3 for supplying the fiber bundle 2, a supply roller 4, and a pressure plate 5 facing the supply roller, and the fiber bundle 2 supplied through the guide 3 is The fibers are transported by the supply roller 4 between the roller 4 and the pressure plate 5, and are supplied to the action area of the separating roller 7 in the fiber flying part 6.

The fiber flying unit 6 includes a separating roller 7 that has a metallic wire on its surface and separates and flies the supplied fibers, and a fiber passage 9 along the surface of the roller 7, and also includes Case 8 with an opening 10 for releasing the fibers
It is composed of.

The rollers in the fiber supply section 1 and the fiber flying section 6 are as follows:
Supply roller 4 arranged opposite to the pressure plate 5
The present invention is not limited to the above-mentioned separating roller 7, but may be configured by a single or plural rollers that separate the supplied fibers into individual single fibers, fly them, and release them by air flow. can.

Note that the roller that is located closest to the opening portion 10 in the fiber flying part 6 and that flies the fibers will be referred to as the final roller here.

A duct 11 extending in the tangential direction of the final roller of the fiber flying part 6 is connected to the opening 10 of the case 8, and a slit 12 having a width shorter than the fiber length is formed at the tip of the duct 11. The slit 12 is oriented such that its long side direction is along a plane perpendicular to the axis of the final roller.

Thus, the duct 11 is connected to the opening portion 1 of the fiber flying section 6.
0 to the slit 12 along the fiber release direction, the slit has a shape that gradually expands in the long side direction and gradually narrows in the width direction of the slit. The dynamically ejected fibers are ejected through this duct 11 almost linearly.

Furthermore, the duct 11 is arranged to be inclined with respect to the collection surface of the net-like collector 13 provided close to the slit 12,
Thereby, the structure is such that the flying fibers are fed from an oblique direction to the net-like collector.

The slit 12 opens on the collection surface of the net-like collector 13, and a suction nozzle 15 communicating with the suction duct 14 is provided on the back surface of the net-like collector 13, facing the slit 12.

The mesh collector 13 is formed of a porous material such as a wire mesh that allows air to pass through and collects fibers, and is movably arranged in a cylindrical or belt shape.

In addition, in FIG. 1, by taking up the fiber bundle 16 collected on the net-like collector 13 in the fiber orientation direction,
The case is shown in which the yarn is spun as twisted yarn.

In the apparatus having the above configuration, the supplied fiber bundle 2 is supplied to the supply port 4 through the guide 3 in the fiber supply section 1, and is moved in the direction of arrow a under the action of the gripping pressure between it and the pressure plate 5. The fibers are subjected to carding action by the metallic wire of the fiber separation roller 7 rotating at high speed, and while being separated, they are sequentially discharged from the opening portion 10 into the duct 11 by the action of centrifugal force and air flow.

Even though the fibers flying in the duct 11 may have an inclination with respect to the fiber flying direction in a plane perpendicular to the axis of the separating roller 7, they do not incline in a direction crossing the plane. is small, and the duct 11 is connected to the separating roller 7.
Since it is formed to gradually expand in a plane perpendicular to the axis of the duct, the flying fiber tips fly in the direction of the slit 12 without contacting the inner surface of the duct and buckling, as shown in FIG. It gradually adjusts its attitude in a direction perpendicular to the flight direction and reaches the slit 12.

In this case, since the entire duct 11 is inclined with respect to the net-like collection surface, the fibers, which are oriented perpendicular to the flying direction, are tilted relative to the net-like collection surface as shown in FIG. As shown in the figure, the fibers are fed in an inclined state, so that one end of the fibers always contacts the collection surface first, and then, while being stretched by the air flow, the fibers are gradually adsorbed to the collection surface to the other end. ,
Fiber orientation is significantly enhanced.

Furthermore, in order to avoid mutual entanglement of flying fibers, it is desirable to make the duct 11 as short as possible.
If it is too short, the fibers will not be able to properly adjust their posture in the direction perpendicular to the flying direction.

However, if the entire duct 11 is inclined with respect to the net-like collection surface as described above, excellent fiber orientation can be obtained even if the duct 11 is somewhat short.

That is, generally, the fibers released from the separating roller 7 are caught by the metallic wire of the separating roller 7 and made to fly, so they assume a posture facing in the fiber flying direction. Even if the fibers are not aligned in a direction perpendicular to the direction of flight, they tend to maintain a posture approximately parallel to the net-like collection surface, and naturally fibers in such a posture will fall into the slit 12.
The fibers will be oriented in the long side direction, and even if the fibers are not aligned at right angles to the flight direction or in a direction close to it, the fibers will always slide from an oblique direction to the net collection surface. Since it is collected in a state in which it is collected, it is stretched when it slides, and the probability of buckling occurring on the collection surface is extremely low.

Furthermore, at the position of the slit 12, the duct 1
The airflow flowing through the slit 1 suddenly changes direction, and at that time, the width of the airflow passage is suddenly expanded in the long side direction of the slit 12, so the airflow inevitably expands in that direction, and this airflow This spread acts effectively to stretch the fibers.

According to the experiments conducted by the present inventors, the case where the collecting surface is arranged at an angle is much better than the case where the collecting surface is arranged perpendicularly to the fiber flying direction. It has been confirmed that it is possible to obtain high orientation. Therefore, it is best to tilt the entire duct with respect to the net-like collection surface and feed all of the flying fibers from a direction that is inclined to the net-like collection surface. It is extremely effective for gaining sex.

As the net-like collector 13 moves, fiber aggregates oriented in the direction of the slits 12 are formed in the form of a web on the collection surface.As shown in FIG. By taking up the fiber bundle 16 in its orientation direction, it can be spun as a twisted yarn.

That is, when the net-like collector 13 is moved in the direction not shown by the arrow b, there is a mechanical thrust F acting on the fiber bundle 16 in the traveling direction of the collection surface, and a force that is related to the shape of the fiber bundle and the pressure distribution of the surrounding air. When a suction force D is applied and the relationship F<D, the fiber bundle 16 is fixed on the suction nozzle 15, and V/π
It is subjected to twisting action at a rotational speed of d.

Here, ■ is the moving speed of the collector 13, and d is the apparent diameter of the fiber bundle 16.

Therefore, when the fiber bundles 16 on the collection surface are taken up, the fibers that are successively adsorbed on the collection surface are sequentially twisted and intertwined with the preceding fiber bundles, and are spun into yarn.

As described in detail above, according to the method and apparatus of the present invention, when the separated and flying fibers are oriented and adsorbed onto the net-like collection surface through the slits, the orientation can be further improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the apparatus of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a partially cutaway side view thereof. 2... Supply fiber bundle, 6... Fiber flying section, 7... Separating roller, 11... Duct, 12... - Slit, 13...Net-like collector.

Claims (1)

[Scope of Claims] 1. The supplied fibers are separated and flown and passed through a slit having a width shorter than the length of the fibers together with an air flow, and the fibers are collected on a net-like collection surface provided close to the slits. In the method of forming a fiber aggregate in which the fiber axes are aligned in the long side direction of the slit, the fibers flown by the final roller of the fiber flying section are arranged so that the long side direction is aligned with the long side direction of the roller. The flying fibers are caused to fly almost straight from the final roller through the slit along the plane perpendicular to the axis, and all of the flying fibers are fed from a direction oblique to the net collection surface within the plane. Characteristic method for forming oriented fiber aggregates. 2. The supplied fibers are separated and flown, passed through a slit with a width shorter than the fiber length along with an air flow, and collected on a net-like collection surface provided close to the slit, thereby controlling the fiber axis. In an apparatus for forming a fiber aggregate whose arrangement direction is aligned in the long side direction of the slit, the fibers are ejected almost linearly from a final roller to a fiber flying section that flies the supplied fibers in the direction of the slit. Connect the duct to
The long side direction of the slit is arranged along a plane perpendicular to the axis of the final roller of the fiber flying part, and all the fibers flying in the duct are arranged at an angle to the net collection surface. 1. An apparatus for forming an oriented fiber aggregate, characterized in that the entire duct is inclined with respect to a net-like collection surface so that the duct is fed from the opposite direction.