JPS638773Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a yarn drawing device for an open-end spinning machine, and more specifically, it is a device that allows the yarn formed within the rotor to be drawn out in a homogeneous state.

BACKGROUND TECHNOLOGY As shown in Fig. 4, in a spinning rotor type open-end spinning frame, a sliver guided by a collector 1 is fed into a feed roller 2, and then transferred while being opened by a combing roller 3. It is carried by the air flow flowing in the transport path 4 and sent into the spinning rotor 5.
Then, the fiber bundle is twisted into a yarn in the spinning rotor 5, and by the action of the yarn pull-out roller 6 and the winding roller 7, the fiber bundle is twisted into a yarn pull-out passage 8.
It is now being brought out through the process.

By the way, since fibers are continuously sent out from the fiber transport path 4 that opens toward the rotor 5, the supplied fibers also fall intermittently on the forming yarn that is being swung around at high speed within the rotor 5. For this reason, a separator 9 has conventionally been attached for the purpose of separating the fibers supplied from the transport path 4 and the formed yarn.
Thereby, the supplied fibers are guided by the lower surface of the separator 9 and led to the inner circumferential wall of the rotor, so that they do not affect the formed yarn.

In addition, on the upper surface of the separator 9, a navel 10 is placed on the upper surface of the separator 9 in order to increase the yarn forming efficiency by rotating on its axis while the forming yarn is being swung around to add false twist.
is installed.

The problem with such a configuration is that the separator 9 and the navel 10 are directly supported by the fiber transport path forming member 11, and the supporting position is at the center of the rotor 5, so the separator 9 adheres to and floats around the axis of the separator 9. Fibers tend to accumulate, and these floating fiber clumps often get caught up in the forming yarn, impairing yarn quality and even leading to yarn breakage.

Problems to be Solved by the Invention The disadvantage of the above-mentioned prior art is that the separator 9 and navel 10 are supported at the center of the rotor 5, and the air flow is stagnant around that area, so floating fibers accumulate. This is due to the fact that it is easy to do. Therefore, it is necessary to prevent floating fibers from accumulating in this air flow stagnation area.

Means for Solving the Problems In view of the above problems, the present invention supports the separator and the navel at a position away from their centers by a support member protruding from the fiber transport path forming member side, and The thread is allowed to run exposed in the space formed between the transport path forming member and the transport path forming member.

Effect With the above configuration, the formed yarn that has passed through the separator and navel passes through the air flow stagnation area at the center of the rotor in an exposed state, and any floating fibers that try to stay there are immediately engulfed and taken out. .

Embodiment An embodiment of the device of the present invention will be described below based on FIGS. 1 to 3.

The fibers guided into the fiber transport path 4 via the feed roller 2 and the combing roller 3 are directed into the roller 5 because the exit opening 4' of the transport path 4 is directed into the roller 5.
Supplied into the rotor. At this time, a separator 9 is provided to guide the fibers to the inner circumferential wall of the rotor and to separate the fibers from the yarn formed within the rotor. In addition, in order to draw out the yarn formed within the rotor 5, there is a navel 10 integrated with the separator 9 at the center of the rotor. , the effect is such that the false twist is applied toward the yarn forming portion of the rotor 5. Since the direction of this false twist is the same as the actual twist imparted by rotor rotation, it is useful for increasing yarn forming efficiency.

Now, in order to support the separator 9 and the navel 10 having the above-mentioned roles, first, the screw 12 as a support member was made to protrude from the fiber transport path forming member 11 side and from a position off the center of the separator 9 and the navel 10. A stud 13, which also constitutes a support member and has a screw hole, is projected from the lower surface of the separator 9, and the separator 9 and the like are coupled and supported to the fiber transport path forming member 11 by the screws 12. As a result, the centers of the separator 9 and the navel 10 are aligned with the center of the rotor 5, while the support member 12 is positioned away from the center of the rotor, and there is a space a between the lower surface of the separator 9 and the transportation path forming member 11. It has a structure that allows the formation of Therefore, when the formed yarn passes through the navel 10 and then the separator 9, it becomes exposed in the space a, and further passes through the yarn drawing passage 8 formed in the transport path forming member 11.

With the above configuration, when the floating fibers generated in the rotor 5 move to the center position of the lower surface of the separator 9, which is the air flow stagnation area, they are immediately caught up in the exposed traveling forming yarn and are discharged. That is, since the fibers are rolled up and discharged in the state of single fibers before becoming a fiber mass, there is no effect on the yarn quality. Since the false twist by the navel 10 is being untwisted in the space a, the action of winding up the floating fibers is performed extremely smoothly.

Regarding the entrainment effect of floating fibers during untwisting, if the fibers supplied from the exit opening 4' of the transport path 4 fall directly on the formed yarn, the fibers that are squeezed and attached when passing through the navel 10 will become neps-like. As a result, the untwisting action cannot be performed sufficiently during untwisting, so the role of the separator 9 in separating the fibers and yarns becomes important.

In this way, on the lower surface of the separator 9, where floating fibers tend to accumulate in the rotor, no accumulation occurs at all due to the action of the formed threads to entrain and discharge the floating fibers, and there is no effect on the quality of the threads. The screws 12 and studs 13 serving as supporting members are located away from the center of the rotor and are in areas where air flow is large, so that floating fibers are less likely to get wrapped around them.

Note that the device of the present invention is not limited to the embodiments described above; for example, the negative pressure within the rotor may be obtained by forced exhaust instead of self-exhaust, and the support member that supports the separator may be integrated with the separator. It may also be made to protrude toward the fiber transport path forming member. Furthermore, the shape of the separator does not have to be circular as long as it covers only the fiber transport path opening 4' and substantially isolates the yarn from the fibers exiting the opening 4'.

Effects According to the device of the present invention, since the formed yarn is allowed to run exposed in the stagnation area of the air flow, the floating fibers that move there are immediately entangled and discharged, thereby eliminating drawbacks such as yarn breakage and yarn quality impairment. It can be eliminated.

[Brief explanation of drawings]

1 to 3 show an embodiment of the device of the present invention, in which FIG. 1 is a cross-sectional side view showing the whole, FIG. 2 is a partial cross-sectional side view showing the main parts in FIG.
The figure is a view taken in the direction of arrow A in FIG. 2, and FIG. 4 is a cross-sectional side view showing the conventional device. 4... Fiber transport path, 5... Rotor, 8... Yarn drawing passage, 9... Separator, 10... Navel, 11... Fiber transport path forming member, {12... Screw, 13... Stud} support Member, a...space.

Claims (1)

[Scope of utility model registration request] An open end that has a separator that serves to separate the fibers supplied from the fiber transport path and the forming yarn, and a navel that is integrated with the separator and has a pull-out port for the forming yarn in the center, in a rotor that rotates at high speed. In the spinning machine, the separator and the navel are supported by a support member protruding from the fiber transport path forming member side at a position offset from their center, and a support member is formed between the separator and the fiber transport path forming member. A thread pulling device that allows the thread to run exposed in a space where the thread is exposed.