JPS6346176B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention is a method for spinning fibers separated and supplied in an open state into bundles and twisting in an open end state to produce particularly highly twisted spun yarn. This invention relates to a spinning device.

BACKGROUND OF THE INVENTION The present invention is an improvement of the apparatus disclosed in Japanese Patent Application Laid-open No. 142334/1983, particularly for spinning highly twisted yarn.

Problems to be Solved by the Invention When spinning highly twisted yarn using the apparatus disclosed in the above publication,
As the fiber bundle that is collected and twisted by sliding on both rollers moves toward the spinning end, the fiber density increases and the fiber bundle diameter decreases. There were technical problems in that the rotation force was not sufficiently transmitted to the fiber bundle, causing the fiber bundle to slip, and the number of twists was limited, making it impossible to twist the fiber bundle more strongly than a predetermined limit.

An object of the present invention is to provide a spinning device that solves the above technical problems.

Means for Solving the Problems The present invention provides a ventilation roller having a group of ventilation holes for adsorbing a group of fibers supplied in a spread state, and a co-operating roller in the same direction with a small gap between the ventilation roller and the ventilation roller. In a spinning device in which a spinning roller that is rotatably opposed to each other is arranged in parallel to slide and twist a fiber bundle with a rear end open, the circumferential speed of the ventilation roller gradually increases toward the spinning end. A pull-out roller is formed in a hollow conical shape, and is installed in front of both rollers to continuously pull out the twisted fiber bundle, with the center plane passing through the axes of both rollers as the boundary. The main feature is a spinning device disposed in an area opposite to the fiber supply area.

Function The device of the present invention slides a fiber bundle with its rear end open between a hollow conical ventilation roller and a spinning roller that is opposed to the ventilation roller with a small gap therebetween so that they can co-rotate in the same direction. Then, the fiber bundle is continuously spun at a predetermined spinning angle from the spinning end located slightly inward of the tip of the gap, and as the fiber bundle moves toward the spinning end, the fiber It is constructed to enhance the twisting action on the bundle.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, 1 is a fiber supply duct installed to separate fiber groups S to S in an opened state and supply them downward. At its lower end, there is formed a supply section 1a having a substantially triangular longitudinal section and having a slit-shaped outlet 2 opened at the lower end for discharging the fiber group S fed from a draft device or the like (not shown). ing.

Reference numeral 3 denotes a ventilation roller rotatably supported on a support base 5 via a cylindrical base 4, and the outer diameter of the base end 3a is such that the circumferential speed gradually increases toward the front. It is formed in the shape of the smallest hollow cone, and on its outer periphery, a group of ventilation holes 6 to 6 formed to allow ventilation and allow the fibers S to pass through are provided through almost the entire circumferential surface. It is rotationally driven via a pulley 7 fitted therein.

8 is a fiber group S supplied from the fiber supply duct 1
A hollow conical intake duct is fitted into the ventilation roller 3 and supported on the mounting base 9 in order to attract the air to the surface of the ventilation roller 3, and the base tube is inserted through the base 4 of the ventilation roller 3. It communicates with an air intake source (not shown) through the air inlet 8a, and on one side thereof there is an air intake port 8 for sucking air through the air hole group 6 of the ventilation roller 3.
b is opened in the shape of a slit along the longitudinal direction.

10 is a spinning roller placed opposite to the ventilation roller 3 in order to impart a twisting action to the fiber group S in cooperation with the ventilation roller 3;
1, and are arranged in parallel to one side of the ventilation roller 3 with a small gap 13 therebetween so as to be able to rotate in the same direction, and in this example, the outer diameter of the base end 10a is Both base ends 3a of both rollers 3, 10 are connected to each other via a pulley 14, which is formed in a conical shape with a length substantially equal to the outer diameter of the base end 3a and faces opposite to the ventilation roller 3, and is fitted onto the base shaft 11. , 10a are rotated at approximately the same circumferential speed in the same direction as the ventilation roller 3. The fiber group S sent out from the outlet 2 of the fiber supply duct 1 placed oppositely above the gap 13 is supplied from above to the base end side of the gap 13, slides on the outer peripheral surfaces of both rollers, and reaches the rear end. The fibers are collected into a free fiber bundle T and twisted.

17, the twisted fiber bundle T is spun at a predetermined spinning angle θ.
A pair of upper and lower pull-out rollers are installed in front and below both rollers 3 and 10 in order to continuously pull out the twisted yarn Y from the spinning end 18 located slightly inward of the tip of the gap 13, The fiber bundle T is disposed on the opposite side of the fiber supply side area with the center plane h passing through the axis a of the ventilation roller 3 and the axis b of the spinning roller 10 as a boundary, and the fiber bundle T is placed above the gap 13 between both rollers 3, While being slid and twisted by the pull-out roller 1
As the heating progresses, the fiber density of the fiber bundle T gradually increases and the diameter of the fiber bundle gradually decreases, and the twisting action applied to the fiber bundle T causes the fiber As the bundle T moves toward the spinning end 18, the circumferential speed of the ventilation roller 3 increases, and the pressure is gradually increased. Then, before the twisted fiber bundle T is separated from between the rollers 3 and 10, it moves from the upper side to the lower side of the center plane h passing through the axes a and b of both the rollers 3 and 10. After passing over the opposite end surfaces 15 and 16 of the rollers 3 and 10 (see FIG. 5 B and C), both rollers 3 and 10 are rotated at a predetermined spinning angle θ so that the drawing direction intersects the central plane h. It is continuously drawn out from the spinning end 18 located slightly inward of the tips 3b and 10b of the.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in this example, the fiber group S supplied in an opened state is
A ventilation roller 3 having a group of ventilation holes 6 for adsorbing
and a spinning roller 10 which is opposed to the ventilation roller 3 so as to be able to rotate together in the same direction with a small gap 13 in between, are arranged in parallel in order to slide and twist the fiber bundle T with its trailing end open. In the spinning device, the ventilation roller 3 is formed into a hollow conical shape so that the circumferential speed gradually increases toward the spinning end, and the twisted fiber bundle T
A pull-out roller 17 installed ahead of both rollers 3 and 10 is connected to both rollers 3 and 1
They are arranged in an area opposite to the fiber supply side area with the center plane h passing through the axes a and b of 0 as a boundary.

Therefore, the circumferential speed of the ventilation roller 3 gradually increases toward the spinning end, and the sliding action applied to the fiber bundle T by the ventilation roller 3 is strengthened as the fiber bundle T approaches the spinning end 18. Therefore, the twisting action of both rollers 3 and 10 is accurately transmitted to the fiber bundle T, and the slip of the fiber bundle T and the untwisting that accompanies this slip can be reliably controlled. It has the advantage of expanding the upper limit of the number of twists that can be twisted and spinning a highly twisted twisted yarn Y while suppressing fluctuations in the number of twists.

In addition, since the spinning end 18 of the twisted yarn Y is arranged inside the tip of the gap 13, when the fiber bundle T passes over the opposite end surfaces 15 and 16 of both rollers 3 and 10, the fiber bundle T is nipped by both rollers 3 and 10 and twisted under pinching pressure, and a strong sliding action is applied to the fiber bundle T. As a result, the set twist when twisting the fiber bundle T with a high twist number This has the effect of securing numbers.

Note that instead of the conical spinning roller 10 of the above embodiment, a cylindrical spinning roller 10A may be placed opposite the ventilation roller 3A as shown in FIG.

Effects of the Invention In other words, the present invention includes a ventilation roller having a group of ventilation holes for adsorbing a group of fibers supplied in an open state, and a roller arranged opposite to the ventilation roller with a small gap therebetween so as to be able to rotate in the same direction. In a spinning device in which a spinning roller and a spun roller are arranged in parallel to slide and twist a fiber bundle with an open rear end, the aeration roller is connected to a hollow cone so that the circumferential speed gradually increases toward the spinning end. In order to continuously draw out the twisted fiber bundle, a pull-out roller installed in front of both rollers is connected to the fiber supply side area with the center plane passing through the axes of both rollers as the boundary. By arranging the fiber bundle in the opposite side region, it has the effect of suppressing slippage of the fiber bundle and accurately imparting the set number of twists to the spun yarn, especially when spinning highly twisted yarn.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway plan view of the spinning device, Fig. 2 is a side view thereof, Fig. 3 is a plan view of the ventilation roller and the spinning roller, and Fig. 4 is a plan view of the spinning device. 5 is a side view of the ventilation roller to explain the twisting process, and Figure 5 A, B, and C are the third and third views, respectively.
6 is a plan view showing another example of the spinning roller. 3,3A...Vent roller, 6,6A...Vent hole, 1
0,10A...spinning roller, 13,13A...
Gap, 18, 18A... Spinning end, S... Fiber, T... Fiber bundle, a, b... Axial center, h... Central plane.

Claims (1)

[Claims] 1. A ventilation roller having a group of ventilation holes for adsorbing a group of fibers supplied in a spread state, and a spinning roller that is opposed to this ventilation roller with a small gap therebetween so as to be able to rotate in the same direction. In a spinning device arranged in parallel to slide and twist the fiber bundle with the trailing end open, the ventilation roller is formed into a hollow conical shape so that the circumferential speed gradually increases toward the spinning end, and A pull-out roller installed ahead of both rollers to continuously pull out the twisted fiber bundle is arranged in an area opposite to the fiber supply side area with a center plane passing through the axes of both rollers as the boundary. A spinning device characterized by: