JPS61152830A - Porous roller for absorption twisting spinning machine - Google Patents

Abstract

PURPOSE:A porous roller is composed of a porous cylinder and a cylindrical supporter, thus keeping sufficient strength of the whole porous roller, even when the porous cylinder is made thin, while the gap between the twisting roller and the other nearest part is kept constant. CONSTITUTION:The supporting material 24 is shaved on its outer surface to form an annular depression 26 so that a gap G is provided on the part corresponding to the part having pores 25a in the porous cylinder 25. The porous cylinder 25 is set to the outer surface of the supporter 24 so that the cylinder covers the annular depression 26 and fixed to the support 24 at its top and bottom ends. Staple fibers are sucked to the porous roller 12 by means of a sucking pipe 5 and the fibers sucked on the porous roller are twisted by the friction between the porous roller 12 and nonporous roller 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Purpose of the Invention (Industrial Field of Application 2) This invention is directed to the use of spread fibers supplied from a fiber supply channel or a pair of twisted O-
The present invention relates to a perforated roller of an adsorption/twisting spinning device that is adsorbed by at least one of the twisting rollers in a wedge-shaped space formed by the surface of the roller and subjected to twisting action to be spun into a yarn.

(Prior art) In order to produce yarn with good uniformity and strong strength in this kind of suction twisting spinning device, the mm constituting the yarn must be passed through a perforated roller as a twisting roller that has an adsorption effect. There is a need for a function that does not reduce suction power.

In order to satisfy this function, it is necessary to form a large number of through holes with a small diameter (specifically, a diameter of 1 mm or less) in the perforated roller, and to ensure a large open area ratio (20% or more). Drilling small diameter holes in a thick plate is very difficult and takes a lot of man-hours, so it is not possible to reduce only the hole diameter while increasing the wall thickness of a perforated roller that requires a large number of holes. Virtually impossible. Therefore, in order to form a large number of through holes with small diameters as described above, it is necessary to reduce the thickness of the wall surface of the perforated roller.

However, in a suction twisting spinning device, the twisting roller is generally supported by a bearing at a shaft portion that projects from one end of the twisting roller. For example, Japanese Patent Publication No. 56-52134 published on December 10, 1981 discloses a support structure for twisting rollers as shown in FIG. 9.

In this device, among a pair of twisting rollers, a porous roller 42 having an intake duct 41 disposed therein and having a fiber adsorption effect is connected to a support base 45 via a bearing 44 in a shaft cylinder 43 protruding from its base end. A boot 94 is rotatably supported by the shaft cylinder 43 and fitted into the end of the shaft cylinder 43.
6. If the thickness of the wall surface of the porous roller 42 in a cantilevered state is formed to be thin, the porous roller will not become a perfect circle during rotation, and the gap between the closest part to the other roller will become smaller. There is a problem that it is not stable and the thickness and number of twists of the spun yarn are uneven.

On the other hand, the special public notice issued on October 29, 1980,
No. 405 discloses a perforated roller 42 as shown in FIG.
A support structure is disclosed in which the bearing is supported by bear links 44 at both ends thereof.

However, in order to support the bearings 441:'' at both ends and to mount and drive the pulley 46 between them, the perforated roller 42 must have a thickness greater than a predetermined value.

After all, it is difficult to reduce the pore diameter and secure the open pore area ratio.

(Problems to be Solved by the Invention) The present invention solves the problem in the conventional apparatus that it is difficult to reduce the diameter of the holes in the perforated roller and ensure the ratio of the open areas.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, the open #H fibers that have been spread by a fiber opening roller and supplied from the fiber supply channel, or the set and rotating in the same direction 1
In an adsorption-twisting spinning device in which a yarn is spun by being subjected to a twisting action while being adsorbed to at least one of the twisting rollers in a horizontal space formed by the surfaces of a pair of twisting rollers, the twisting roller comprising at least one of
A perforated roller loosely fitted on the outside of a suction pipe having a suction port extending in the direction of the axis of the roller is made of a perforated cylinder with a large number of ventilation holes formed on its circumferential surface, and an opening larger than the ventilation holes formed on the curved surface. The perforated cylinder is fixed to the outside of the support member with a gap provided between the part where the ventilation hole is formed and the support member.

(Function) In this invention, the perforated roller is composed of a perforated cylinder having a large number of ventilation holes formed on the circumferential surface, and a cylindrical support member that supports the perforated cylinder. The strength of the entire perforated roller is maintained by the supporting member, and even when rotated in a cantilevered state, the perforated cylinder maintains its perfect circular state, and the gap between the closest part to the other twisting roller is maintained constant. The thickness and number of twists of the spun yarn are uniform.

(Example) An example embodying the present invention will be described below with reference to FIGS. 1 to 5. Two fitting holes 2.3 are formed adjacent to each other in the support base 1. A cylindrical support tube 4 is fitted into one fitting hole 2 at its base end, and a cylindrical support tube 4 is fitted into the other fitting hole 3. A cylindrical suction pipe 5, which also serves as a support tube, is inserted through and fixed to the tube. The suction pipe 5 has its base end connected to an air suction source (not shown), and has a narrow suction port 5a extending in the longitudinal direction adjacent to the support tube 4. The support tube 4 and the suction vibrator 5 have a small diameter inner circumference at the tip, and bearings 6 and 7 are fitted and fixed to the small diameter portion at the outer circumference of one end. That is, the bearings 6 and 7 are supported with gaps between them and the support tube 4 and the suction tube 75, except for one end thereof. Each of the bearings 6, 7
Rotating shafts 8.9 are fitted and fixed to the respective shafts, and a non-porous roller 10 as a twisting roller is attached to the proximal end mounting portion of the supporting cylinder 4 so as to be rotatable along the outer periphery of the supporting cylinder 4 at the protruding end of one of the rotating shafts 8. 11
It is fixed in. The non-perforated roller 10 has a covering member 10a made of an elastic material such as polyurethane adhered to its outer peripheral surface. Further, a porous O-roller 12 as a twisting roller is fixed to the protruding end of the other rotary shaft 9 along the outer periphery of the suction vibrator 5 at a base end attachment portion 13 . The non-porous roller 10 and the perforated roller 12 are pressed against the drive belt 14 at the base end attachment portion 11.13.
are rotated in the same direction.

On one side of the non-perforated roller 10 and the perforated roller 12, there is a fiber supply channel 15 having a tip formed in a shape corresponding to the wedge-shaped space R formed on the outer surface of both rollers 10.12. The fiber supply device 16 is disposed facing the wedge-shaped space R. A fiber opening roller 7 is disposed on the upstream side of the fiber supply channel 15 so as to be able to rotate at high speed, and the fiber is supplied by the action of a grooved roller 18 and a presser 20 that is biased against the grooved roller 18 by a spring 19. The sliver 21 is spread out and fed into the fiber supply channel 15. Further, above the fiber supply device 16, a pull-out roller 22 and a winding device 23 are arranged.

Next, the perforated roller 12 will be explained in more detail.

The porous O-ra 12 includes a cylindrical support member 24 formed integrally with the base end attachment portion 13, and is fixed to the support member 24 so as to be able to rotate integrally therewith, and has a large number of ventilation holes 25a on its circumferential surface. It is composed of a porous cylinder 25 in which a hole is formed. An annular recess 26 is formed on the outer peripheral surface of the support member 24 in order to provide a gap G in a portion corresponding to the portion where the ventilation hole 25a of the porous cylinder 25 is formed, and the porous cylinder 25 covers the four annular portions 26. It is fitted onto the outer periphery of the support member 24 and fixed to the support opening 24 at both upper and lower ends thereof. The vent hole 25a is formed to have a diameter of 1 mm or less in order to prevent the passage of fibers that are effective as yarn during yarn spinning, and the opening area ratio of all the vent holes 25a to the outer peripheral surface of the porous cylinder is 20% or more. A large number of them are formed.

The support member 24 has a large number of elongated holes 27, which serve as openings for communicating the inner side of the support member 24 with the gap G, in the annular recess 26 portion. As shown in FIG. 1, the elongated holes 27 are formed in a spiral shape extending in the axial direction of the perforated roller 12, and the total area of the elongated holes 27 is equal to
It is formed to be larger than the total area of a.

Further, as shown in FIG. 3, the elongated hole 27
In a cross section perpendicular to the axis of 2, the outer side of the wall surface is formed to be out of phase with respect to the rotational direction than the inner side.

Next, the operation of the apparatus configured as described above will be explained. Due to the cooperation between the presser 20 and the grooved roller 18, the sliver 21 is supplied to the opening roller 17 at a constant speed, and the sliver 21 is spread at zero.
- The fibers are opened by the roller 17 and fed into the fiber supply channel 15. The spread fibers sent into the fiber supply channel 15 fly toward the outlet 15a side of the m miscellaneous supply channel 15 by the suction airflow of the suction vibrator 5, and are moved to the porous roller 12 corresponding to the suction port 5a of the suction vibrator 5. is adsorbed to the outer surface of the The fiber bundle S attracted to a predetermined position of the perforated roller 12 by the suction action of the suction vibrator 5 is transferred by the friction between the perforated roller 12 and the non-perforated roller 10, with a line parallel to the axial direction of both rollers as the axis of rotation. It is twisted by twisting. The fiber bundle S twisted by both rollers 10 and 12 is pulled out as yarn Y by a pull-out roller 22, and wound up as a package P by a winding device 23.

The diameter of the ventilation hole 25a formed in the porous circle 825 that adsorbs the spread fibers supplied from the fiber supply channel 15 is 1.
Since it is as small as 111Il or less, passage of the effective fibers constituting the yarn Y is reliably prevented and the yield is improved. Is the opening area of one ventilation hole small, or is the opening area of two ventilation holes relative to the porous cylinder 25
A large number of ventilation holes 2 are provided so that the opening area ratio of 5a is large.
5a is formed, the suction action of the suction port 5a of the suction pipe 5 sufficiently reaches the outer surface of the porous cylinder 25 via the gap G and the elongated hole 27 which is larger than the ventilation hole 25a.

Therefore, the fiber bundle S is sufficiently subjected to the twisting action of both rollers 10, 12 while being reliably attracted to a predetermined position, and a strong yarn is produced. In addition, in order to form a large number of ventilation holes 25a with small diameters, the thickness of the porous cylinder 25 is extremely thin, 0.5n+m or less, or the porous cylinder 25 is fixed to the support member 24 at both its upper and lower ends. Since it rotates together with the support member 24, even when the perforated roller 12 is rotated in a cantilevered state, the perforated cylinder 25 is maintained in a perfect circular state, and the distance between the porous cylinder 25 and the closest part to the non-perforated roller 10 is maintained constant. The thickness and number of twists of the spun yarn become uniform, making it possible to produce yarn with good quality.

Further, in this embodiment, the elongated hole 27 of the support member 24 is formed in a shape in which the outer side of the wall surface is out of phase with the inner side in the rotational direction in a cross section perpendicular to the axis of the perforated roller 12. Due to the movement that promotes the inflow of air during rotation, yarn can be spun even when the suction force of the suction pipe 5 is weakened, making it possible to reduce the energy consumption of the suction source. Furthermore, when the elongated hole 27 is formed parallel to the axis of the perforated roller 12 as shown in FIG. There is a possibility that the adsorption force on the outer circumferential surface of the fiber 25 may change and periodic unevenness may occur on the fibers.In this example, the elongated hole 27 is formed in a spiral shape, so the open 1 m fiber supplied from the fiber supply channel 15 may It is adsorbed in a uniformly distributed state at predetermined positions on the circumferential surface of the pores @ 25, and there is no possibility that the above-mentioned periodic spots will be formed on the fibers.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, as shown in FIGS.
In addition to supporting the reinforcing member 5 at both ends thereof, the reinforcing member 2
A configuration may also be adopted in which support is provided at eight portions as well. When the reinforcing member 28 is provided in this manner, even if the thickness of the porous cylinder 25 is made thinner, it is possible to maintain its shape in a perfect circle during rotation. The shape of the reinforcing member 28 is not particularly limited, and it may be arranged in a spiral shape along the elongated hole 27 without blocking the elongated hole 27 and the ventilation hole 25a, or it may be arranged in spots at arbitrary positions. good. Furthermore, as shown in FIG. 8, a large number of circular through holes 29 with a diameter larger than the ventilation hole 25a may be provided instead of the elongated hole 27 as an opening that communicates the inside of the support member 24 with the gap G, or a porous cylindrical hole may be provided. 25 ventilation holes 2
It is also possible to arbitrarily change the shape, structure, etc. of each part without departing from the spirit of the present invention, such as changing the shape of 5a to a hexagonal or quadrangular shape.

Effects of the Invention As detailed above, according to the present invention, a large number of small-diameter ventilation holes can be formed in a perforated cylinder, and the shape of the perforated cylinder is maintained in a perfect circle even when the cylinder is rotated. The gap between the closest part to the yarn is maintained constant, making it possible not only to produce a strong yarn with uniform thickness and twist number, but also to ensure that the effective fibers that make up the yarn have no ventilation holes. This has an excellent effect of improving the yield without being sucked into the suction pipe.

[Brief explanation of drawings]

1 to 4 show an embodiment embodying the present invention.
The figure is an enlarged sectional view taken along line B-B in Figure 4, and Figure 3 is C in Figure 2.
-C line ≠≠ sectional view, Figure 4 is a plan view of the suction twist spinning device, Figure 5 is a partial side view when the long holes are formed parallel to the axis of the porous O-ra, Figure 6 is the support A sectional view showing a modified example in which a reinforcing member is interposed between the member and the porous cylinder, FIG. 7 is a partially cutaway side view, and FIG. 8 is a schematic diagram showing a modified example in which the shape of the opening of the support member is changed. FIG. 9 is a partially cutaway plan view of a conventional device, and FIG. 10 is a sectional view showing another conventional device. Suction pipe 5, suction port 5a1 non-porous O-roller 10° perforated roller 12, support member 24, perforated cylinder 25, ventilation hole 25a,
Elongated hole 27, reinforcing member 28, gap G, wedge-shaped space R0 Patent applicant Toyota Industries Corporation representative
People Patent Attorney On 1) Hirosenro! f.

Claims (1)

[Claims] 1. Formed by spread fibers spread by a spread roller and supplied from a fiber supply channel, or by the surfaces of a pair of twisting rollers arranged adjacent to each other and rotating in the same direction. In an adsorption-twisting spinning device that spins a yarn by receiving a twisting action while being adsorbed by at least one of the twisting rollers in a wedge-shaped space, the invention comprises at least one of the twisting rollers, A perforated roller that is loosely fitted on the outside of a suction pipe having a suction port that extends to a perforated cylinder that has a large number of ventilation holes formed on its circumference, and a cylindrical cylinder that has an opening larger than the ventilation holes formed on its peripheral surface. A perforated roller for an adsorption twist spinning device, which is constructed of a support member, and has a perforated cylinder fixed to the outside of the support member with a gap provided between the part where the ventilation hole is formed and the support member. 2. The opening formed in the support member is formed in a shape that is out of phase in the rotational direction from the outside or inside of the wall surface in a cross section perpendicular to the axis of the porous roller. perforated rollers of adsorption twisting spinning equipment. 3. The perforated roller of the suction twist spinning device according to claim 1 or 2, wherein the opening formed in the support member is a long hole formed in a spiral shape extending in the axial direction.