JPH0529694B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for cleaning the inside of a spinning body of a rotor-type open-end spinning frame.

BACKGROUND ART As shown in FIG. 2, a conventional rotor-type open-end spinning machine has a fiber feeding section and a garnet consisting of a feed roller 1, a presser 3 pressed against the feed roller 1 by a spring 2, and a collector 4. A fiber opening roller 5 with a wire wound around its circumferential surface is housed in a recess of a housing 6a, and a spinning body 6 is integrated by attaching a top cover (not shown) to the opening roller 5, and a hollow rotor holder 8 is configured to rotate freely at high speed. The spinning body 6 is further provided with a fiber transport channel 9 that communicates a part of the circumferential surface of the opening roller 5 with a rotating spinning chamber 7a inside the rotor 7. .

A fiber bundle S, such as a sliver, supplied into the spinning body 6 through the collector 4 is fed to the feed roller 1.
The fibers are held between the presser 3 and the fiber opening roller 5, and are spread into pieces and transported along the circumferential surface of the roller 5 in the rotating direction (indicated by the arrow) to the fiber transport channel 9. The fibers fly along the airflow in the channel 9 and reach the inside of the rotor, and are accumulated as a fiber ring on the inner circumferential wall surface of the rotating spinning chamber 7a due to the centrifugal force generated by the rotor 7 rotating at high speed. The fiber ring is drawn out of shape through a stationary yarn guide tube 10 provided facing the bottom of the rotating yarn protection chamber 7a, and is twisted into yarn by the rotation of the rotor. The airflow flowing in the channel 6 from the opening roller 5 toward the rotor 7 is mainly brought about by a suction air source (not shown) communicating with the inside of the rotor holder 8 via the duct 11. That is, due to the suction action of the suction air source, both the inside of the rotor housing 8 and the inside of the rotating spinning chamber 7a of the rotor 7 housed therein become negative pressure, so that spinning is performed along a part of the circumferential surface of the opening roller. Air flows into the spinning body through the dust removal opening 12 provided in the body and the opening of the fiber supply section, a part of which branches into the channel 9 and joins with the airflow flowing in from the air intake port 9a to form a conveying airflow. . As mentioned above, a part of the air introduced into the spinning body flows through the sides of the feed roller 1, presser 3, and opening roller, which are the fiber supply parts, so that it cleans the fluff adhering to the vicinity of each of these parts. It also has the function of

In recent years, the speed of open-end spinning machines has increased, and the rotation speed of the rotor tends to reach over 80,000 rpm.However, at such high speeds, the diameter of the conventional size rotor is large, so the centrifugal force generated by rotation is large. As a result, the tension when drawing out the yarn increases, making it impossible to smoothly spin the yarn. Accordingly, the diameter of the rotor has been reduced, but this has also led to a reduction in the size of the rotating spinning chamber and the diameter of the pores in the fiber transport channel facing the rotor. A reduction in the diameter of the channel ultimately leads to a decrease in the amount of air introduced into the spinning body, resulting in insufficient cleaning of the interior. This tendency to contamination is further accelerated by an increase in the spinning rate due to an increase in the speed of the rotor. As this contamination progresses, there is an increased chance that clumps of fluff will be mixed into the fibers that are opened and transported into the rotary spinning chamber, causing the spinning operation to be interrupted (yarn breakage) or during the spinning process. This is undesirable because it may cause slabs to occur, deteriorating the operating rate and yarn quality.

Problems to be Solved by the Invention The present invention attempts to solve the problems associated with the prior art described above, and is intended to solve the problems of the prior art described above, and to reduce dirt and fluff buildup inside the spinning body due to the increase in speed of open-end spinning machines. The purpose is to eliminate the problem.

Structure of the Invention In order to achieve this object, the present invention includes a fiber bundle supply section and a fiber opening roller housed in a spinning body, and a rotor supported in a rotor holder connected to a forced exhaust means so as to be rotatable at high speed. The fiber bundle supplied into the spinning body by the fiber bundle supply section is opened by an opening roller, and the opened fibers are forced into the rotor holder through a fiber transport channel provided in the spinning body. In a rotor-type open-end spinning machine, the spinning yarn is supplied to a rotary spinning guide of a rotor that is maintained at a negative pressure by exhaust gas, converged, and then drawn out from the rotor while being twisted to form a yarn. A ventilation channel is provided on the downstream side of the fiber transport channel with respect to the rotational direction of the rollers, and is directed from the opening roller to the inside of the rotor holder excluding the rotor, so as to extend from the fiber supply section through the opening roller and into the rotor housing. To provide a method for cleaning an open-end spinning frame, which is characterized by increasing air flow rate.

The present invention will be explained in more detail below based on the drawings.

FIG. 1 shows a preferred embodiment of the invention. In this figure, the second frame shows a conventional open-end spinning machine.
Parts that are the same as those in the figure are given the same reference numerals.

The rotor-type open-end spinning frame of the present invention has basically the same structure as the conventional spinning frame shown in FIG. The most distinctive feature is that the spinning body 6 is provided with a ventilation channel 13 that opens facing a part of the peripheral surface of the opening roller 5 on the downstream side of the fiber transport channel with respect to the rotating direction of the opening roller 5. It is in. The outlet side of the ventilation channel 13 is provided so as to point toward the inside of the rotor 7, that is, the inside of the rotor holder 8 which is removed from the rotating spinning chamber.

The open-end spinning frame of the present invention operates in the same manner as a conventional spinning machine to spin yarn, but the air introduced into the spinning body 6 is transferred to a newly provided ventilation channel 1 in addition to the fiber transport channel 9.
3, the increase in static pressure inside the spinning body is suppressed, and the amount of air flowing into the spinning body increases as a whole. Therefore, a sufficient amount of air current always flows through the side surfaces of the feed roller 1 and the opening roller 5, so that the accumulation of fluff and the like is prevented, and the drawbacks of the prior art described above are avoided.

Note that the ventilation channel 13 must not be directed toward the interior of the rotor 7. This is ventilation channel 1
When the airflow from 3 flows into the rotor 7, it is added to the conveying flow from the fiber transport channel 9, disrupting the swirling flow within the rotor, and the flying posture of the fibers within the rotor becomes unstable, causing the inner periphery of the rotor to become unstable. This is because the accumulation of fibers on the surface becomes uneven and the quality of the yarn deteriorates. The direction of the ventilation channel 13 must therefore be described so as to point inside the rotor holder 8 but outside the rotor 7.

Since the ventilation channel of the present invention opens on the peripheral surface of the opening roller on the downstream side of the fiber transport channel 9 with respect to the rotating direction of the opening roller, most of the fibers that are opened fly into the channel 9 on the upstream side. Since there are no fibers that run and are transported to the downstream side, there are no fibers that will be separated even if intake air acts on the circumferential surface by acting on the ventilation channel 13, and the rotor holder 8 contains no fibers. Therefore, only the air that is not present is inhaled, and the yield does not decrease.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an open-end spinning frame according to the present invention, and FIG. 2 is a side sectional view of an open-end spinning frame of the prior art. 1...Feed roller, 4...Collector, 5...
...Spreading roller, 6... Spinning body, 7...
Rotor, 8... Rotor holder, 9... Fiber transport channel, 13... Ventilation channel.

Claims (1)

[Claims] 1. A fiber bundle supply section and a fiber opening roller housed in a spinning body, and a rotor supported for high speed rotation in a rotor holder connected to a forced exhaust means, and the fiber bundle supply section allows the spinning body to be The fiber bundle supplied into the spinning body is opened by an opening roller, and the opened fibers are passed through a fiber transport channel provided in the spinning body.
In a rotor-type open-end spinning machine, yarn is fed into a rotary spinning chamber of a rotor that is maintained at negative pressure by forced exhaust of the rotor holder, and then bundled into a yarn by being pulled out from the rotor and twisted. A ventilation channel is provided on the downstream side of the fiber transport channel with respect to the rotational direction of the opening roller, and is directed from the opening roller to the inside of the rotor holder excluding the rotor, so that the ventilation channel extends from the fiber supply section through the opening roller to the rotor housing. A method for cleaning an open-end spinning machine, which is characterized by increasing the amount of air flowing into the spinning machine.