JPS6052215B2 - Spinning room in open-end spinning machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an open-end spinning machine, and particularly to a spinning chamber for obtaining a spun yarn that is uniform and has high yarn strength.

Conventionally, the spinning chamber of an open-end spinning machine is configured as shown in FIG.

That is, a spindle 3 is rotatably supported by a fixed housing 1 via a bearing 2, a rotor 4 is fixed to one end of the spindle 3, and the other end is driven by a drive belt 5. Then, the fibers opened by a fiber opening device (not shown) are carried by the air flow through the fiber transport pipe 6 and transferred to the rotor 4.
The fibers are supplied to the inner peripheral surface of the rotor 4 by centrifugal force and reach a large-diameter converging part 4b from the inner circumferential surface 4a of the rotor 4, and the fibers converged in the converging part 4b are pulled out from the yarn draw-out tube 7 and wound on a winding device (not shown). taken. Incidentally, reference numeral 4c denotes an air discharge port for discharging the air inside the rotor 4 as the rotor 4 rotates, and serves to generate an air flow within the fiber transport pipe 6. In such a conventional device, the fibers in the fiber transport pipe 6 are drafted (generally referred to as an air draft) by the air flow whose flow velocity gradually increases, and the fibers exiting the transport pipe 6 have a flow rate higher than the final flow velocity of the air flow. It comes into contact with the inner circumferential surface 4a of the rotor 4 rotating at a high circumferential speed, and is further drafted between the two,
Due to the centrifugal force of the rotor 4, the particles slide along the inner circumferential surface 4a toward the larger diameter side and are focused on the focusing portion 4b. In short, the inner circumferential surface of the rotor 4 acts to stretch the fibers supplied from the fiber transport pipe 6 and smoothly guide them to the converging section 4b.
The rotation of the rotor 4 causes the converging section 4 to twist the accumulated fiber bundles. However, when such a conventional device is used to further increase the speed of the rotor 4, the relative speed difference between the fiber flight speed of the fiber transport pipe 6 and the inner circumferential surface 4a of the rotor 4 rotating at high speed becomes When the fibers become too large, a sudden frictional force acts on the fibers at the moment they come into contact with the inner circumferential surface 4a, making the fibers easy to damage or break.As a result, the uniformity of the spun yarn is poor and the yarn There was a problem with the power being low. In order to solve the drawbacks of such conventional devices, the present invention provides a rotating housing 11 having an inner circumferential surface 11c that rotates at a circumferential speed that is a predetermined amount higher than the fiber flight speed of the fiber transport pipe 6, which will be described in detail below. The rotor 40 has an inner circumferential surface 40a that rotates at a circumferential speed higher than that of the housing 11 by a predetermined amount. That is, in the conventional device, the path of the fibers supplied from the fiber transport pipe 6 is simply from the inner circumferential surface 4a to the converging portion 4b.
In the present invention, the inner circumferential surface 4a of the conventional device is divided into inner circumferential surfaces 11c and 40a, and the fibers from the fiber transport pipe 6 are transferred to the inner circumferential surface 11c.
, 40a eliminates fiber breakage and improves the uniformity and yarn strength of the spun yarn. Examples of the present invention will be described below.

FIG. 1 and FIG. 2 show a first embodiment, in which 10 is a fixed housing, and a first bearing 21 is connected to the fixed housing.
The intermediate portion 11b of the rotary housing 11 is rotatably supported. A spindle 30 is rotatably supported by the rotary housing 11 via a second bearing 22, and a rotor 40 is fixed to one end 30a.

40a is an inner circumferential surface formed on the rotor 40 that is smaller than a normal rotor, 40b is a fiber convergence part, and 40c is an air outlet.

Further, one end side 11a of the rotary housing 11 is formed so as to surround the rotor, and its inner circumferential surface 11c is tapered to be substantially continuous with the rotor inner circumferential surface 40a. Further, a first drive belt 50 is in contact with the other end side 30b of the spindle 30, and a second drive belt 51 is in contact with the other end side of the three-rotation housing 11. 1
1 to rotate.

Further, reference numeral 11e designates a plurality of exhaust ports bored in the inner peripheral part of one end side 11a of the rotary housing 11, through which air is drawn into the duct 3.
Discharge to the 80 side. Note that 60 is a fiber supply pipe and 70 is a yarn draw-out pipe, which are constructed in the same manner as the conventional apparatus. In the apparatus of the present invention configured as described above, the peripheral speed of the inner circumferential surface 11c of the rotating housing 11 is such that the fiber 4. The second drive belt 51 is driven so that the final flow velocity of the air in the transport pipe 60 is higher than the final flow velocity by a predetermined amount, and the fibers are stretched to the extent that the fibers are not cut.
When the spindle 30 is driven by the first drive belt 50 so that the circumferential speed of the inner circumferential surface 40a of the rotary housing 11 is greater than the circumferential speed of the inner circumferential surface 11c of the rotary housing 11 by a predetermined amount, the inner circumferential surface of the rotary housing 11 11c and the inner circumferential surface 40a of the rotor 40 that is substantially continuous therewith, a smooth fiber stretching action is performed, and the fibers corrected to a linear form on the inner circumferential surfaces 11c and 40a are formed in the converging portion 40.
It is focused on b.

Therefore, in the present invention constructed and operated in this way, smooth stretching is performed without applying a sudden stretching action to the fibers, so that it is possible to obtain a spun yarn with a uniform yarn strength. became possible.

Note that the present invention is not limited to the first embodiment, but the effects will be greater if other configurations shown in FIGS. 3 to 5 are adopted.

That is, (a) as shown in FIG. 3, the inner peripheral surface 40b of the rotor 40 and the inner peripheral surface 11c of the rotary housing 11 are displaced by a width t.

(b) As shown in FIG. 4, the inner peripheral surface 40b of the rotor 40
and the inner circumferential surface 11c of the rotary housing 11 to form an inclination α.

(c) A labyrinth R is formed between the rotor 40 and the rotating housing 11 as shown in FIG.

Furthermore, the present invention can be applied not only to self-exhaust type rotors but also to forced exhaust type rotors, and it is also possible to provide not only one rotary housing but a plurality of rotary housings. For example, not only can spun yarn with uniformity and high yarn strength be obtained, but also the number of revolutions of the rotor can be significantly increased compared to conventional ones, and production output can be greatly increased.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing the present invention, Fig. 2 is a side sectional view showing the main part thereof, Figs. 3 to 5 are side sectional views showing the main part of other embodiments, and Fig. 6 is a conventional FIG. 3 is a side sectional view showing the device. 10...Fixed housing, 30...Spindle, 21...First bearing, 22...
...Second bearing, 50...First drive belt, 51...Second drive belt, 40...
...Rotor, 40a...Inner peripheral surface, 40b...
...Focusing unit, 11...Rotating housing, 1
1c...Inner peripheral surface.

Claims (1)

[Claims] 1 A rotary housing is rotatably supported by the fixed housing via a first bearing, and a second rotary housing is rotatably supported by the fixed housing.
A spindle having a rotor fixed to one end thereof is rotatably supported via a bearing, and one end of the rotating housing is formed to surround the rotor, and the inner circumferential surface of the rotor and the inner circumferential surface of the rotating housing are formed such that one end side of the rotating housing surrounds the rotor. The other end of the spindle is driven by a first drive belt, and the other end of the rotary housing is driven by a second drive belt, so that the rotation A spinning chamber in an open-end spinning machine, characterized in that the rotational speed of the rotor is greater than the rotational speed of the housing.