JPH0555611B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Purpose of the Invention (Field of Industrial Application) This invention is directed to the invention, in which spread fibers supplied from a fiber supply device are applied to the outer surfaces of a pair of twisting rollers that are arranged adjacent to each other and rotate in the same direction. The present invention relates to an adsorption/twisting spinning device in which the yarn is spun as a yarn by receiving a twisting action while being adsorbed by at least one of the twisting rollers in a wedge-shaped space formed by the above.

(Prior art) Conventionally, in this type of suction twisting spinning device, the spread fibers supplied from the fiber supply device are fed by the suction action of a suction duct disposed within a perforated roller serving as a twisting roller. It travels on the airflow generated within the channel and is attracted to the outer surface of the perforated roller. However, since the axis of the porous roller and the fiber supply channel are not parallel, even straight fibers are bent when adsorbed and deposited on the surface of the porous roller. For this reason, it is difficult to deposit the fibers on the surface of the porous roller in a state parallel to the yarn forming line, resulting in uneven appearance of the spun yarn, low yarn strength, and yarn breakage during spinning. There is a problem that occurs.

In December 1982, as a means to improve this problem.
Japanese Patent Publication No. 57-59328, published on the 14th, as shown in FIG. suction duct 44
A device has been proposed in which an air flow substantially parallel to the axis of the spun yarn, that is, the axis of the perforated roller 43, acts on the fibers at the end of the fiber supply channel 42 due to the suction action of the suction duct 44. ing. However, the fibers opened by the opening device do not necessarily move through the fiber supply channel 42 in a straightly stretched state due to the crimps of the fibers themselves.
Even if there is an air flow substantially parallel to the surface of the perforated roller 43 due to the perforated roller 43, all the fibers are sufficiently stretched and oriented parallel to the yarn forming line on the perforated roller 43, and the airflow is carried out through the intake hole 45a of the intake duct 45. It cannot be deposited on the surface of the corresponding perforated roller 43. Furthermore, since the suction airflow of the suction duct 44 acts on a position radially away from the thread forming line,
The surface of the porous roller 43 has no function of stretching the fibers after adsorption. Therefore, although there has been some improvement, the uniformity of the yarn appearance is insufficient, the yarn strength is still low, and yarn breakage is likely to occur during spinning. or,
Due to the suction action of the suction duct 44, some of the fibers supplied from the fiber supply channel 42 are deposited on the tip 44a of the suction duct 44, and the deposited fibers fall onto the perforated roller 43 and are twisted into the spun yarn to form a slab. There is a risk that

(Problems to be Solved by the Invention) This invention is caused by the fact that the spread fibers supplied from the fiber supply device are bent on the surface of the twisting roller and are spun out as yarn while being piled up in a disordered orientation. This solves the problems of asymmetric yarn appearance, low yarn strength, and yarn breakage.

Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a wedge-shaped space formed by the outer peripheral surfaces of a pair of twisting rollers, which has a fiber adsorption function. Apart from the suction airflow from inside the twisting roller, a suction port is provided on the extension line of the yarn forming line on the twisting roller to apply an airflow in the direction opposite to the yarn drawing direction to the wedge-shaped space during spinning. Arranged.

(Function) In this invention, the fibers that are spread by a fiber opening roller or a draft roller and fed into a fiber supply channel are passed through a suction port of a suction pipe disposed inside a perforated roller serving as a twisting roller. The yarn moves to the surface of the porous roller on the suction air current, is deposited on the surface of the porous roller corresponding to the suction port, is twisted by both twisting rollers, and is pulled out as a thread. The fibers moving to the surface of the perforated roller on the suction airflow are affected by the airflow in the direction opposite to the yarn drawing direction due to the action of the auxiliary airflow suction port, and the fibers move to the surface of the perforated roller just before being attracted to the surface of the perforated roller. In addition to aligning the fibers in the axial direction, when the fibers are twisted into yarn after adsorption, a force is applied to the fibers in the opposite direction to the yarn pulling direction, and the fibers are stretched while being twisted, resulting in uniformity of the yarn. As the strength improves, the strength of the thread also improves.

(Example) Examples 1 to 4 which embody this invention will be described below.
This will be explained according to the diagram. Two fitting holes 2 and 3 are formed adjacent to each other in the support base 1, and a cylindrical support tube 4 is fitted into one of the fitting holes 2 at its base end. A cylindrical suction pipe 5, which also serves as a support tube, is inserted and fixed into the other fitting hole 3. The suction pipe 5 has its base end connected to the main suction pipe 6, and a narrow suction port 5a extending in the longitudinal direction is formed at a position adjacent to the support tube 4. Bearings 7 and 8 are fitted and fixed to the inner end portions of the support tube 4 and the suction pipe 5 at the outer periphery of one end thereof, respectively. Rotating shafts 9 and 10 are fitted and fixed to each of the bearings 7 and 8, respectively, and a non-porous roller 11 serving as a twisting roller rotates along the outer periphery of the supporting cylinder 4 at the protruding end of one of the rotating shafts 9. Possibly secured at its proximal attachment portion 12. A covering member 11a made of an elastic material such as polyurethane is adhered to the outer peripheral surface of the non-porous roller 11. A porous roller 13 serving as a twisting roller is fixed to the protruding end of the other rotary shaft 10 at its base end attachment portion 14 so as to be rotatable along the outer periphery of the suction pipe 5. The non-perforated roller 11 and the perforated roller 13 are rotated in the same direction by being pressed against the drive belt 15 at the base end attachment portions 12 and 14.

On one side of the non-perforated roller 11 and the perforated roller 13, as shown in FIG. A fiber supply device 17 having a fiber supply channel 16 is arranged such that the fiber supply channel 16 and the wedge-shaped space R correspond. As shown in FIG. 3, the channel forming member 18 of the fiber supply device 17 is cut out at its tip except for the upper thread pulling side, and
Packing 19 is fixed to the lower surface to maintain airtightness between the supports 1. A fiber opening roller 20 is disposed on the upstream side of the fiber supply channel 16 so as to be able to rotate at a high speed, and the fiber opening roller 20 is disposed at a constant speed by the cooperative action of a feed roller 21 and a presser 23 which is biased toward the feed roller 21 by a spring 22. The supplied sliver 24 is opened and fed into the fiber supply channel 16. or,
A pull-out roller 25 and a winding device 26 are arranged above the fiber supply device 17.

A suction hole 27 is provided as an auxiliary airflow suction port for causing an airflow to act on the wedge-shaped space R in the direction opposite to the yarn drawing direction, in addition to the suction airflow from the suction port 5a of the suction pipe 5 on the support base 1. However, the porous roller 13 corresponding to the thread forming line, that is, the suction port 5a
It is transparent on the extension line of the surface. A casing 28 is installed on the lower surface of the support base 1 in a state that maintains airtightness with the outer periphery of the base end of the suction pipe 5, and a casing space 29 of the casing 28 is connected to the intake hole 2.
7 are connected. The casing 28 has a pressure gauge 3
0 and an auxiliary suction pipe 32 equipped with an adjustment damper 31, the auxiliary suction pipe 32 merges with the main suction pipe 6 and is connected to a suction duct (not shown). . The main suction pipe 6 is also equipped with a pressure gauge 33 and an adjustment damper 34.

Next, the operation of the apparatus configured as described above will be explained. The sliver 24 fed to the opening roller 20 at a constant speed by the cooperative action of the presser 23 and the feed roller 21 is opened by the opening roller 20 and fed into the fiber supply channel 16 . The spread fibers fed into the fiber supply channel 16 fly toward the outlet 16a side of the fiber supply channel 16 on the suction airflow of the suction pipe 5,
It is adsorbed and deposited on the outer surface of the porous roller 13 corresponding to the suction port 5a of the suction pipe 5. Porous roller 13
The fiber bundle S adsorbed at a predetermined position is transferred to the perforated roller 1.
3 and the non-perforated roller 11, the material is twisted by being rolled with the axis of rotation perpendicular to the plane of the paper in FIG. The fiber bundle S twisted by both rollers 11 and 13 is turned into yarn Y by the pull-out roller 25.
It is pulled out as a package P and wound up as a package P by the winding device 26.

In the wedge-shaped space R where the fiber bundle S undergoes the twisting action, in addition to the suction airflow from inside the porous roller 13, that is, the suction airflow from the suction pipe 5, there is a suction airflow from the suction hole 27 in the opposite direction to the yarn drawing direction. Due to the generation of airflow, the spread fibers exiting the outlet 16a of the fiber supply channel 16 are aligned in the axial direction of the perforated roller 13 (yarn pulling direction) immediately before being adsorbed to the surface of the perforated roller 13, and Also, when the fibers are twisted into yarn, a force acts on the fibers in the direction opposite to the direction in which the yarn is pulled out. Therefore, since the fibers are twisted into yarn while stretching the crimps of the fibers themselves, the uniformity of the yarn is improved, the strength of the yarn is improved, and a yarn with a good appearance is produced. Further, since the tip of the channel forming member 18 is notched except for the upper yarn pull-out side, there is no obstruction between the outlet portion 16a of the fiber supply channel 16 and the intake hole 27 of the auxiliary suction airflow. Therefore, spinning is performed in a stable state without the accumulation of fluff, dust, etc.

The suction force of the suction hole 27 and the suction force from the suction port 5a of the suction pipe 5 have a great influence on the quality and yield of the spun yarn, so a balance between the two is important. The suction port 5 is adjusted by adjusting the adjustment dampers 34 and 31 provided on the suction pipe 6 and the auxiliary suction pipe 32.
a. It is preferable to adjust the suction force from the intake hole 27 to an optimal value. In particular, if the suction force of the suction hole 27 is too strong, fibers that are effective for forming threads will be suctioned, resulting in poor yield. cotton
When spinning is carried out under the conditions of 100%, spun yarn count 20, and spinning speed 200 m/min, the suction amount of the main suction pipe is 1 m ³ /min, and the suction amount of the auxiliary suction pipe is 0.3 m ³ /min. In the case of min, a spun yarn with the best yarn appearance and yarn strength was obtained, and the yield was also good.

In addition, in the device of this embodiment, the fitting holes 2 and 3 for holding the non-porous roller 11 and the perforated roller 13 as the twisting rollers and the air intake hole 27 are formed on the support base 1. Since the positional relationship between the yarn forming position and the suction hole 27 is kept constant, even if the position of the outlet portion 16a of the fiber supply channel 16 moves slightly due to installation error of the fiber supply device 17, the suction airflow from the suction hole 27 remains constant. Since it always acts in a constant state on the fibers being twisted into yarn, it does not affect the yarn quality, and it is possible to always spin yarn with constant yarn quality.

It should be noted that the present invention is not limited to the above-mentioned embodiment. For example, the rollers 11 and 13 may be arranged horizontally instead of vertically, or the intake hole 27 may be arranged in the support base 1. Instead, the suction port of the auxiliary airflow suction pipe is directly arranged on the opposite side of the wedge-shaped space R from the thread pull-out side, or the main suction pipe 6 and the auxiliary suction pipe 32 are connected to different suction sources. You can do it like this. Furthermore, in order to promote the flow of air at the yarn forming position, a blow hole may be provided on the other side of the twisting roller, facing the air intake hole 27.

Effects of the Invention As detailed above, according to the present invention, the spread fibers are moved by the twisting rollers by the action of the suction airflow from the auxiliary airflow suction port disposed on the extension line of the yarn forming line subjected to the twisting action. Immediately before being adsorbed to the surface of the fiber, the direction of the fiber is aligned parallel to the yarn forming line, and when being twisted into the yarn, the fiber is stretched by the action of a force in the opposite direction to the yarn pulling direction. Since it is twisted into a yarn, it has the excellent effect of producing a yarn with good uniformity with uniform fiber directions and high yarn strength.

[Brief explanation of the drawing]

1 is a longitudinal sectional view, FIG. 2 is a plan view, FIG. 3 is a sectional view taken along the line A--A in FIG. 2, FIG. 4 is a partial side view, and FIG. 5 is a sectional view showing a conventional device. Support stand...1, Fitting hole...2,3, Suction pipe...5, Suction port...5a, Main suction pipe...6, Non-porous roller...11, Perforated roller...
13. Fiber supply channel... 16. Intake hole as suction port... 27. Auxiliary suction pipe...
32, wedge-shaped space...R, thread...Y.

Claims (1)

[Scope of Claims] 1. Spread fibers supplied from a fiber supply device are processed in a wedge-shaped space formed by the outer peripheral surfaces of a pair of twisting rollers that are arranged adjacent to each other and rotate in the same direction. In an adsorption/twisting spinning device in which yarn is spun by being subjected to a twisting action while being adsorbed by a twisting roller, in addition to the suction airflow from inside the twisting roller, which has a fiber adsorption function, there is a An adsorption twisting spinning device in which an auxiliary airflow suction port for applying an airflow in a direction opposite to the yarn drawing direction is arranged on an extension of the yarn forming line on the twisting roller. 2. The suction twisting spinning device according to claim 1, wherein the auxiliary airflow suction port and the fitting hole of the support cylinder that supports the twisting roller are formed in the same support base. 3. The suction twisting spinning device according to claim 1 or 2, wherein the suction flow rate inside the auxiliary airflow suction port and the twisting roller is adjustable.