JPH0224930B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of an open-end spinning machine.

In most open-end spinning machines, after a sliver is opened by a roller having a large number of needles on the outer periphery, the sliver is introduced into a spinning chamber within a rotor, and the rotation of the rotor causes the sliver to be spread onto the peripheral wall of the spinning chamber. The fibers of the sliver are accumulated and further drawn out to produce twisted yarn. The roller functions to spread the sliver using the needle and at the same time send the sliver toward the spinning chamber.
The needles are severely worn due to contact with the fibers, and the opening function deteriorates in a short period of time. In order to replace the rollers, production must be interrupted during that time, resulting in a significant drop in production efficiency.

The present invention aims to solve such conventional problems, and embodiments thereof will be described below with reference to the drawings.

FIG. 1 shows a cross section of an open-end spinning machine according to the present invention, and the spinning machine includes a rotor provided in a hollow housing forming a spinning chamber, a ring forming a side wall of the housing, and a thread pulling out from the spinning chamber. It consists of a thread guide device, a mechanism for rotating the rotor and ring, and other devices.

The housing has a sliver introduction block 2 with a sliver introduction hole 1 formed through the center, and a flange 3 at one end.
It is composed of a rotor support cylinder 5 having a hollow cylinder part 4 at the other end, and a ring 6. The collar 3 and the portion of the block 2 facing the collar 3 are formed into concentric circular shapes, and the spinning chamber 7 is formed between them. The ring 6 is slidably in close contact with the outer peripheral surfaces of the block 2 and the collar 3, and the ring 6 forms the peripheral wall of the spinning chamber 7. The side wall of the sliver introduction hole 1 is formed in an arcuate cross-section so that both its entrance and exit are wide, and the spinning chamber 7 therefore has a substantially conical shape with its center protruding toward the introduction hole 1. Reference numerals 8, 9, and 10 are air holes that communicate the outer wall of the block 2 with the introduction hole, and 11 is a large number of small holes provided in the ring 6.

The rotor 12 is provided in the spinning chamber 7, and its center protrudes into the sliver introduction hole 1.
It is approximately cone-shaped and has the same size and shape. A central shaft 13 fixed to the rotor 12 is supported in the rotor support cylinder 5 via a bearing 14, and a gear 16 meshing with a toothed drive belt 15 is provided at the end of the shaft 13 on the opposite side of the rotor 12. is fixed to the spinning chamber 7, and as the belt 15 runs, the rotor 12 rotates within the spinning chamber 7. The shape of the rotor 12 is also shown in FIGS. 2 and 3, the inclined surface 17 of which is very close to the sliver introduction block 2 or the sliver introduction hole 1. Rotor 1
2 is formed with a plurality of fiber grooves 19 having a substantially semicircular cross section extending from the central protrusion 18 toward the outer periphery. The groove depth gradually increases toward the outer periphery of the rotor 12. Also rotor 1
2 is made of extremely hard metal, and each side edge 21 of the fiber groove 19 has an angle close to a right angle.

The ring 6 is fixed on a ring support tube 23 that is rotatably supported around the rotor support tube 5 via a bearing 22, and the outer circumference of the ring 6 is in slidable contact with the inner circumference of the stationary tube 24. . Reference numeral 25 denotes a main body cover fixed on the frame 26, and the stationary cylinder 24 and the sliver introducing block 2 are supported and fixed by the cover 25. 27 again
is a bottom plate fixed to the cover 25, the rotor support cylinder 5 is fixed via a cylinder 28 fixed to the bottom plate 27, and the transmission shaft 30 is supported via another cylinder 29. . The transmission shaft 30 is rotatable relative to the cylindrical body 29 by a bearing 31,
It has gears 32 and 33 at both ends. One gear 32 meshes with a gear 34 fixed to one end of the ring support cylinder 23, and a gear 33 at the other end meshes with a toothed drive belt 35. Therefore, as the belt 35 runs, the transmission shaft 30 rotates, and the ring 6 further rotates. Further, the stationary cylinder 24 has a plurality of intake holes 36, and the main body cover 25 has one intake hole 3.
7 are provided respectively, a spinning chamber 7 and a ring 12.
The small hole 11, the air intake hole 36, and the air intake hole 37 are arranged to communicate with each other, and the main body cover 2
An intake pipe 38 to which a suction airflow is applied by a blower (not shown) is connected to the intake hole 37 of No. 5.

The thread leading-out device 39 is connected to the sliver introducing block 2.
It is fixed on a cover block 40 fixed to the outer periphery of the pipe, and has a twisting pipe 41 and an air jet pipe 42 fixed at right angles to the pipe 41. A yarn outlet hole 43 is formed at the end of the sliver introducing block 40, a yarn outlet pipe 44 is inserted into the cover block 40, and the twisting pipe 41 is connected to the yarn outlet hole 43 and the yarn outlet pipe 44. It communicates with the end of the spinning chamber 7 via. An air jet hole 45 communicating with the air jet pipe 42 is provided in the side wall of the twisted pipe 41.
2 is supplied with compressed air from a compressed air source (not shown), and the compressed air flows into the twisted pipe 41 through the air jet hole 45 to generate a swirling air flow within the pipe 41. Further, an annular air chamber 46 is formed between the cover block 40 and the sliver introduction block 2, and the sliver introduction block 2
An air injection hole 47 is provided in which the air chamber 46 and the inside of the yarn outlet pipe 44 are communicated with each other. Further, a compressed air supply pipe 48 connected to a compressed air source (not shown) is fixed to the cover block 40 so as to communicate with the air chamber 46, and the compressed air flowing into the air chamber 46 flows through the air holes 8 and 9 described above. , 10 into the sliver introduction hole 1 or into the spinning chamber 7.

The structure of the present spinning machine is as described above, compressed air is supplied from the air jet pipe 42 and the compressed air supply pipe 48, and a suction air flow is applied from the intake pipe 38. The rotor 12 and the ring 6 rotate as the drive belts 15 and 35 are driven by a motor (not shown), and the rotation directions thereof are opposite to each other. A pair of sliver supply rollers 49 are arranged in front of the sliver introduction hole 1, and the sliver S is continuously supplied into the sliver introduction hole 1 by the rollers 49.

The sliver S introduced into the sliver introduction hole 1 comes into contact with the central protrusion 18 of the rotating rotor 12 and is dispersed along the peripheral wall of the introduction hole 1, and the dispersed fibers enter the fiber groove 19 of the rotor 12. to go into.
The center protrusion 18 of the rotor 12 has a sliver introduction hole 1
The space that allows the introduction of the sliver S between the peripheral wall of
Since the compressed air supplied from the compressed air supply pipe 48 is ejected into the above-mentioned space through the air chamber 46 and the first air hole 8, each fiber is directed toward the back of the fiber groove 19. and are actively sent. Further, since the rotor 12 is rotating, the fibers are introduced into all the fiber grooves 19 in a distributed manner in a fixed amount, thereby opening the sliver S. The fibers introduced into the fiber groove 19 are moved into the spinning chamber by compressed air blown into the fiber groove 19 from the air chamber 46 through the second and third air holes 9 and 10, and by the centrifugal force of the rotor 12. 7 and adheres to and accumulates on the inner circumferential surface of the ring 6. Since the fiber grooves 19 are arcuate in the direction opposite to the rotational direction 20 of the rotor 12, the fibers can be fed out smoothly. The centrifugal force acting on each fiber in the fiber groove 19 increases as the fiber approaches the outlet of the fiber groove 19, so that the fibers are further opened while passing through the groove 19. The fibers accumulated on the inner periphery of the ring 6 are connected to the intake pipe 38 through the intake hole 3.
A suction air flow acts through 7, 36 and the small holes 11, thereby removing fine dust and dirt in the fibers. The fibers on the inner circumferential surface of the ring 6 are further moved into the spinning chamber 7 by a compressed air flow ejected from the air chamber 46 through the air injection hole 47 into the yarn outlet pipe 44.
The yarn is drawn out from the yarn through the yarn outlet hole 43 and the yarn outlet pipe 44 into the twisting pipe 41 . When the fibers are drawn out from the spinning chamber 7, they are twisted by the rotation of the ring 6 to form one spun yarn Y. The ring 6 is attached to the rotor 1 in order to effectively twist the fibers.
2, and protrudes outward in order to smoothly supply the yarn Y from the spinning chamber 7 to the yarn outlet hole 43 and to increase the density of fiber accumulation on the inner periphery of the ring 6. have. Furthermore, the yarn outlet hole 43 is also slightly inclined toward the rotational direction of the ring 9 so as to be suitable for the passage of the yarn Y. The yarn Y introduced into the twisting pipe 41 receives a swirling air flow jetted from the air jet pipe 42 through the air jet hole 45, thereby promoting the entanglement of each fiber in the yarn Y, making it stronger and more complete. It becomes a thread Y,
It is wound as a package onto a bobbin (not shown).

Each fiber of the sliver S is dispersed and introduced into each fiber groove 19 of the rotor 12 in small amounts, and the fibers in the fiber groove 19 are combined with the compressed air flow from the air holes 8, 9, and 10 and the rotating centrifugal rotation of the rotor 12. Spinning chamber 7 by force
The fibers are not combed by the fiber grooves 19, but are spread by dispersing into each groove 19 and moving within the grooves 19, and the fiber grooves 19 are used to spread the fibers. Since the groove shape is suitable for smooth movement, the rotor 12 and its fiber grooves 19 do not wear easily and can withstand long-term use. Furthermore, each fiber has a plurality of fiber grooves 1 as described above.
Since the fibers are introduced into the spinning chamber 7 in a dispersed state little by little by the fibers 9, the fibers are opened efficiently. Furthermore, since the gear 16 that drives the rotor 12 and the gear 33 that drives the ring 6 are provided on the same side of the spinning machine, by wrapping both drive belts 15 and 35 around the shaft of one motor, The rotor 12 and ring 6 can be driven simultaneously by the same motor. Furthermore, since a suction air flow is applied to the fibers in the spinning chamber 7 through the small holes 11 provided in the ring 6, it is possible to remove dust and the like from the fibers and improve the quality of the spun yarn Y. In addition, the trouble of cleaning the above-mentioned dust accumulated in the spinning chamber 7 can be saved.

The rotational speeds of the rotor 12 and the ring 6 are appropriately set depending on the type of fiber or spun yarn Y, etc., and in some cases, it is also possible to rotate the ring 6 in the same direction as the rotor 12 at a speed different from that of the rotor 12. .

The shapes of the sliver introducing block 2 and the rotor 12 are not limited to the above-described embodiments, and various design changes are possible. Therefore, instead of the fiber groove 19, the rotor 1
The inclined surface 17 of No. 2 is another uneven surface, and the fiber group supplied to the center of the rotor is formed on the inclined surface 17 by the uneven surface.
It may be dispersed uniformly on the top.

As explained above, according to the present invention, a rotating rotor is provided in the spinning chamber, and the sliver is supplied to the center of the rotor, and the contact surface of the rotor with the sliver is provided with unevenness. is uniformly distributed on the contact surface by the unevenness and rotation of the rotor. Therefore, the contact area between the rotor and the fibers is increased, and as a result, significant wear does not occur at specific locations on the rotor, and the life of the rotor is extended. Moreover, since the above-mentioned irregularities do not need to maintain a sharp shape, some wear does not affect the life of the rotor. Furthermore, since each fiber of the sliver is widely dispersed on the contact surface, it is easily opened by the centrifugal force caused by the rotation of the rotor, and a homogeneous spun yarn can be obtained.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an open-end spinning machine according to the present invention, FIGS. 2 and 3 show a rotor, FIG. 2 is a perspective view, and FIG. 3 is a front view. 1...Sliver introduction hole, 7...Spinning chamber, 12...
...Rotor, 17... Inclined surface, 19... Fiber groove, S
...Sliver.

Claims (1)

[Claims] 1 A rotating rotor is provided in the spinning chamber of the housing, a sliver introduction hole is provided in the housing to guide the sliver to the center of the rotor, and an arc curved in the opposite direction to the rotation direction is drawn on the contact surface of the rotor with the sliver, and width and An open-end spinning machine with unevenness that gradually increases in depth toward the outer circumference of the rotor.