JPS6235033Y2 - - Google Patents

Description

[Detailed explanation of the invention] The invention is based on the invention after opening the sliver into a large number of fibers.
The present invention relates to an open-end spinning machine that produces spun yarn by twisting and splicing the fibers.

Open-end spinning machines attach sliver fibers to the peripheral wall of a spinning chamber and twist and splice the fibers by rotating the spinning chamber, but in order to perform high-speed spinning, the sliver must be opened sufficiently; It is particularly important to uniformly adhere the opened fibers to the peripheral wall. Insufficient fiber opening or non-uniform adhesion to the peripheral wall causes variations in the thickness of the produced yarn, and this variation becomes significant during high-speed spinning.

This invention aims to solve the above problems,
Embodiments of the present invention will be described below based on the drawings.

In FIG. 1, this spinning machine includes a draft device, a housing forming a spinning chamber, a rotor provided in the housing, a ring forming a peripheral wall of the housing, a yarn drawing device for drawing out yarn from the spinning chamber, a rotor, and a ring. It consists of a rotating mechanism and other devices.

The draft device 1 consists of two roller pairs, a back roller 2 and a front roller 3, which are provided on the running path of the sliver S, a sliver guide 4 provided between both rollers, and a trumpet 5 provided behind the back roller. , the sliver guide 4 and the trumpet 5 have guide holes 4a and 5a for focusing the sliver S, respectively. The above rollers 2 and 3 are the upper top roller 2
a, 3a and lower bottom rollers 2b, 3b, the bottom rollers 2b, 3b are rotated in the clockwise direction by a drive source not shown, and the top rollers 2a, 3a are mounted on each bottom roller 2b, 3b. It is press-fitted so that it can rotate freely.

The housing has a sliver introduction block 7 having a sliver introduction hole 6 formed therethrough in the center. Tsuba 8 at one end
The rotor support cylinder 10 has a hollow cylinder part 9 at the other end, and a ring 11. The collar 8 and the portion of the block 7 facing the collar 8 are formed in a concentric circular shape, and the spinning chamber 12 is located between them.
is formed. The ring 11 is slidably in close contact with the outer peripheral surfaces of the block 7 and collar 8,
The ring 11 forms the peripheral wall (fiber accumulation part) of the spinning chamber 12. The side wall of the sliver introduction hole 6 is formed in an arcuate cross-section so that both its entrance and exit are wide, and therefore the spinning chamber 12 has a substantially conical shape with its center projecting toward the introduction hole 6. Reference numerals 13, 14, and 15 are air holes that communicate the outer wall of the block 7 with the introduction hole 6, and 16 is a large number of small holes provided in the ring 11.

The rotor 17 is provided within the spinning chamber 12, with its center protruding into the sliver introduction hole 6, and has a substantially conical shape that is approximately the same shape and size as the spinning chamber 12.
The central shaft 18 fixed to the rotor 17 has a bearing 19
A gear 21 that meshes with a toothed drive belt 20 is fixed to the end of the shaft 18 opposite to the rotor 17, and the gear 21 meshes with a toothed drive belt 20. As a result, the rotor 17 rotates within the spinning chamber 12. The shape of the rotor 17 is also shown in FIGS. 2 and 3, the inclined surface 22 of which is very close to the sliver introduction block 7 or the sliver introduction hole 6.
A plurality of fiber grooves 24 having a substantially semicircular cross section extending from the central protrusion 23 toward the outer circumference are formed at equal intervals in the rotor 17, and the grooves 24 extend in the direction of rotation of the rotor 17.
5, the groove width and groove depth gradually increase toward the outer circumference of the rotor 17. Further, the rotor 17 is made of extremely hard metal, and each side edge 26 of the fiber groove 24 has an angle close to a right angle.

The ring 11 is fixed on a ring support tube 28 which is rotatably supported around the rotor support tube 10 via a bearing 27, and the outer circumference of the ring 11 is in slidable contact with the inner circumference of the stationary tube 29. . 30
is a main body cover fixed on a frame 31, and the stationary cylinder 29 and the sliver introducing block 7 are supported and fixed by the cover 30.
Further, 32 is a bottom plate fixed to the cover 30, the rotor support cylinder 10 is fixed via a cylinder 33 fixed to the bottom plate 32, and another cylinder 3 is fixed to the rotor support cylinder 10.
4, a transmission shaft 35 is supported. Transmission shaft 35
is rotatable relative to the cylindrical body 34 by a bearing 36, and has gears 37 and 38 at both ends.
One gear 37 meshes with a gear 39 fixed to one end of the ring support cylinder 28, and a gear 38 on the other end meshes with a toothed drive belt 40. Therefore, as the belt 40 runs, the transmission shaft 35 rotates,
Furthermore, the ring 11 rotates. In addition, the stationary cylinder 29
has a plurality of intake holes 41, and the main body cover 30 has a plurality of intake holes 41.
Two air intake holes 42 are provided respectively in the spinning chamber 1.
2. The small hole 16 of the ring 11, the intake hole 41, and the intake hole 42 communicate with each other, and the intake hole 42 of the main body cover 30 has an intake pipe 43 to which a suction airflow is applied by a blower (not shown). are connected.

The thread introducing device 44 is connected to the sliver introduction block 7.
It has a twisting pipe 46 and an air jet pipe 47 fixed at right angles to the twisting pipe 46. A yarn outlet hole 48 is formed at the end of the sliver introducing block 45, a yarn outlet pipe 49 is inserted into the cover block 45, and the twisting pipe 46 is connected to the yarn outlet hole 48 and the yarn outlet pipe 49. It communicates with the end of the spinning chamber 12 via. An air ejection hole 50 communicating with an air ejection pipe 47 is provided on the side wall of the twisted pipe 46, and compressed air is supplied to the air ejection pipe 47 from a compressed air source (not shown), and the compressed air is supplied to the air ejection pipe 47. The air flows into the twisted pipe 46 through the hole 50 and generates a swirling air flow within the pipe 46. Further, an annular air chamber 51 is formed between the cover block 45 and the sliver introduction block 7, and the sliver introduction block 7 is provided with an air injection hole 52 that communicates the air chamber 51 with the inside of the yarn outlet pipe 49. It is provided. Further, a compressed air supply pipe 53 connected to a compressed air source (not shown) is fixed to the cover block 45 so as to communicate with the air chamber 51, and the compressed air flowing into the air chamber 51 is passed through the air holes 13, 14, The sliver is ejected through 15 into the sliver introduction hole 6 or into the spinning chamber 12.

The structure of the present spinning machine is as described above, compressed air is supplied from the air jet pipe 47 and the compressed air supply pipe 53, and a suction air flow is applied from the intake pipe 43. The rotor 17 and the ring 11 rotate as the drive belts 20, 40 are driven by a motor (not shown), and the rotation directions thereof are opposite to each other.

The sliver S from the drawing machine passes through the trumpet 5, is properly focused by the guide hole 5a, and then passes through the back roller 2, the sliver guide 4 and the front roller 3 in this order. The sliver S is fed while being pinched by both rollers 2 and 3,
Further, since the circumferential speed of the front roller 3 is several times that of the back roller 2, the sliver is drafted to a predetermined thickness, and is introduced into the sliver introducing hole 6 at high speed by the high speed rotation of the front roller 3.

The sliver S introduced into the sliver introduction hole 6 comes into contact with the central protrusion 23 of the rotating rotor 17 and is dispersed along the peripheral wall of the introduction hole 6, and the dispersed fibers enter the fiber groove 24 of the rotor 17. to go into.
The center protrusion 23 of the rotor 17 has a sliver introduction hole 6
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 53 is ejected into the above-mentioned space through the air chamber 51 and the first air hole 13, each fiber is directed toward the back of the fiber groove 24. and are actively sent. Further, since the rotor 17 is rotating, the fibers are introduced into all the fiber grooves 24 in a distributed manner in a fixed amount, thereby opening the sliver S. The fibers introduced into the fiber groove 24 are blown out from the air chamber 51 into the fiber groove 24 through the second and third air holes 14 and 15.
Further, it is sent into the spinning chamber 12 by the centrifugal force of the rotor 17, and adheres to and accumulates on the inner peripheral surface of the ring 11.
Since the fiber grooves 24 are arcuate in the direction opposite to the rotational direction 25 of the rotor 17, the fibers can be fed out smoothly. The centrifugal force acting on each fiber in the fiber groove 24 increases as the fiber approaches the outlet of the fiber groove 24, so that the fibers are further opened while passing through the groove 24. A suction air flow acts on the fibers accumulated on the inner periphery of the ring 11 from the intake pipe 43 through the intake holes 42, 41 and the small hole 16, thereby removing fine dust and dirt from the fibers. be done. The fibers on the inner circumferential surface of the ring 11 are further compressed by a compressed air flow that is ejected from the air chamber 51 through the air injection hole 52 into the yarn outlet pipe 49.
The yarn is drawn out from the spinning chamber 12 through the yarn outlet hole 48 and the yarn outlet pipe 49 into the twisting pipe 46 . When the fibers are drawn out from the spinning chamber 12, they pass through the ring 11.
The yarn is twisted by the rotation of the yarn Y, and becomes one spun yarn Y. The ring 11 rotates in the opposite direction to the rotor 17 in order to effectively twist the fibers, and also smoothly supplies the yarn Y from the spinning chamber 12 to the yarn outlet hole 48, as well as twisting the fibers at the inner periphery of the ring 11. Bend portions 55 protrude outward to increase integration density.
have. Furthermore, the yarn outlet hole 48 is also slightly inclined toward the rotational direction of the ring 11 so as to be suitable for the passage of the yarn Y. The yarn Y introduced into the twisting pipe 46 receives a swirling airflow ejected from the air jet pipe 47 through the air jet hole 50, thereby promoting entanglement of each fiber in the yarn Y, making it stronger and more complete. The resulting yarn Y is wound as a package onto a bobbin (not shown).

According to the above-described spinning machine, the sliver S is fed into the spinning chamber 12 in small quantities and at high speed by the draft device 1, and then the sliver S is further fed into fiber groups in small quantities along the fiber groove 24 of the rotor. The fibers are separated, spread, and fed into a ring 11 on the peripheral wall of the spinning chamber. A plurality of the fiber grooves 24 are provided on the inclined surface 22 of the rotor 17, and since the rotor 17 rotates at high speed, the slivers S are evenly distributed and adhered to the inner surface of the ring 11. Since the sliver S is supplied into the spinning chamber 12 in small quantities by the drafting device 1, each fiber is easily opened by the rotational centrifugal force of the rotor 17. The fibers are dispersed and introduced into the fiber groove 24 little by little, and the fiber groove 24
The fibers in the spinning chamber 1 are moved by the compressed air flow from the air holes 13, 14, 15 and the rotational centrifugal force of the rotor 17.
2, the fibers are not combed by the fiber grooves 24, but are spread by dispersing into each groove 24 and moving within the grooves 24, and the fiber grooves 24 are used to spread the fibers. Since the groove shape is suitable for smooth movement, the rotor 17 and its fiber grooves 24 do not wear easily and can withstand long-term use. Furthermore, since a suction air flow is applied to the fibers in the spinning chamber 12 through the small holes 16 provided in the ring 11, it is possible to remove dust and the like from the fibers and improve the quality of the yarn Y. , it is possible to save the effort of cleaning the above-mentioned dust and the like accumulated in the spinning chamber 12.

The rotational speeds of the rotor 17 and the ring 11 are appropriately set depending on the type of the sliver S or yarn Y, and it is possible to rotate them in the same direction if the speeds are different from each other. Further, the draft device 1 is not limited to a two-wire type, but may be a three-wire type, a four-wire type, or the like.

As explained above, according to the present invention, the sliver drafted to a certain thickness by the draft device is directly introduced into the spinning chamber, and a plurality of fiber grooves formed at equal intervals on the inclined surface of the rotor are used to The sliver was opened in a spinning chamber using rotational force. Therefore, since the sliver is introduced in small quantities at high speed, it is sufficiently opened by the rotor, and each opened fiber is slightly attached to the peripheral wall of the spinning chamber (fiber accumulation area) by the rotational centrifugal force of the rotor. It is possible to produce spun yarns that are evenly adhered to each other and have no uneven thickness at high speed.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of an open-end spinning machine according to the present invention, FIG. 2 is a perspective view of the rotor, and FIG. 3 is a front view of the rotor. 1...Draft device, 6...Sliver introduction hole,
12... Spinning chamber, 17... Rotor, 22... Inclined surface, 23... Center protrusion, 24... Fiber groove (fiber guide groove), S... Sliver.

Claims (1)

[Scope of utility model registration request] A spinning chamber having a substantially conical shape with a protruding top portion as a sliver introduction side, a rotor provided within the spinning chamber, and a drafting device that drafts the sliver to a predetermined thickness and introduces it into the spinning chamber, The rotor has a substantially conical shape having the same shape and size as the spinning chamber, and a plurality of fiber guide grooves extending from the center protrusion of the cone toward the outer circumference are formed at equal intervals on the inclined surface of the rotor. An open-end spinning machine characterized in that the outer peripheral side end of the fiber guide groove is open toward a fiber accumulation part on the peripheral wall of the spinning chamber.