JPS5813649B2 - Kiyuchiyaku Kanenbo Sekisouchiyoukanentai - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a spinning device that belongs to the open-end spinning system and is equipped with an adsorption twisting device. The present invention relates to an adsorption twisting spinning device that spins yarn by twisting it while converging it on a twisting body.

Recently, various adsorption twisting type spinning devices have been developed.
As shown in FIGS. 1 and 2, a typical example of these is that a fiber supply nozzle 2 and a suction duct 3 are arranged opposite to each other with a traveling twisted body 1 having a net structure in between. The opened fibers pass through the supply nozzle 2 and are sucked into the suction airflow generated by the suction duct 3, and together with the cross-sectional shape of the supply nozzle 2, which is formed vertically at right angles to the traveling direction of the traveling twisted body 1, It is collected and oriented on the traveling twisted body 1.

The collected and oriented fibers are acted upon by the frictional force F caused by the running of the traveling twisted body 1 and the suction force N of the suction duct 3, and when N>F, the fiber bundle is placed above the opening 4 of the suction duct 3. It is stabilized on the surface of a traveling twisted body, rotated and twisted around the direction of arrow Y perpendicular to the traveling direction of the traveling twisted body, and is pulled out in the direction of arrow Y and wound into a cheese shape (not shown). be.

A conventional twisted body for an adsorption-twisted spinning device will be explained with reference to FIGS. 3 and 4.

As shown in the figure, the mesh-like twisted body 1 has been used with a flat weave or a twill weave in which the pitch P between the meridian 5 of the net in the drawing direction of the yarn and the latitude line 6 in the running direction of the twisted body is equal. For the purpose of increasing the frictional force of the traveling twisting body against the bundle and improving the twisting efficiency, a twist as shown in Figs. 5 and 6 is applied to the meridian 5.
In this case, the meridian 5 and the latitude 6 had the same pitch.

On the other hand, increasing the speed of the twisted body is required to improve productivity, and as the twisted body runs at high speed, the frictional force F between the net and the fiber bundle increases, but the suction force N does not easily increase. In either case of the net structure, F>N, which caused yarn breakage and an increase in fluff.

That is, in order to overcome the above-mentioned obstacles, it was necessary to increase the suction force N in response to the increase in the speed of the twisting body.

In order to increase the suction force, the mesh 70 unit size may be increased.

However, as shown in FIG. 2, the width of the opening 4 of the suction duct 3 is larger than the diameter of the fiber bundles collected and oriented on the traveling twisted body 1. The fibers flying away from the bundle orientation area pass through the mesh 7 and are sucked into the suction duct 3, or the tips of the fibers are immersed in the mesh 7 without being sucked into the suction duct 3.

The fibers immersed in the mesh 7 are not rolled into the fiber bundle, but float up and scatter from the running twisted body 1, or form a band-like adhered cotton layer on the twisted body 1, both of which cause yarn breakage. becomes.

An object of the present invention is to provide an apparatus that increases the suction force by increasing the unit area of the mesh 7 of the traveling twisted body 1 without generating fluff or band-like adhered cotton.

Next, an embodiment of the present invention will be described with reference to FIGS. 7 to 9.

In Fig. 7, the cross-sectional shape of the supply nozzle 2 is vertically elongated in the direction in which the yarn is drawn out, and the opening of the suction duct 3 has a correspondingly elongated shape. Since the fibers are opened so that the angle θ is 90°, the opened fibers are aligned in the direction in which the yarn is pulled out and collected on the twisted body 1.

That is, in the above structure, when the traveling twisted body 1 is running at high speed, the tip of the fiber will sink into the mesh 7 only if the length a of the mesh 7 in the direction of pulling out the threads is relatively large. , does not have much influence on the length b of the twisted body in the running direction.

If you try to increase the suction force by increasing the unit area of the mesh T by making the pitch P between the meridian 5 and the latitude 6 the same as in the conventional mesh structure, the length of the thread in the mesh 7 in the drawing direction will increase. The above-mentioned failures are more likely to occur.

A rectangular mesh has a longer perimeter than a square mesh of the same area.

Therefore, when the area of the mesh I is the same, that is, the suction force N is the same, the rectangular mesh 7 can transmit a larger frictional force F than the square mesh T, and can perform effective twisting.

In other words, when the frictional force F is the same, the unit area of the mesh T in a rectangular shape is larger than that in a square shape, and therefore the suction force N is larger.

Focusing on the above, the present invention attempts to solve the above problem by increasing the length b of the twisted body in the running direction without increasing the length a of the yarn in the drawing direction, and creating a rectangular mesh.

If the pitch of the meridian lines 5 is small or the diameter of the meridian lines is large and the length b of the mesh 7 in the traveling direction of the traveling twisted body 1 is small, when the twisted body 1 runs at high speed, the suction air flow is caused by the meridian lines 5. The suction efficiency decreases as the traveling speed of the twisted body 1 increases.

In this sense as well, it is preferable that the mesh 7 has a rectangular shape.

Next, experimental values of the device of the present invention will be shown.

Mesh type: Flat structure, Mesh material: Stainless steel, Mesh wire diameter: 40μ to 60μ mesh (mesh) Door: Length a of the 100-200 mesh mesh in the thread pulling direction a: 0.0
Under conditions of 3 to 0.3 mm or more, the length b of the mesh in the running direction of the twisted body is b
= a, b = 2 a, b = 3 The suction force was measured for each case of a, and when b = 3a, the suction force of the most dog was obtained.

In addition, since the experiment used a net with a flat texture, when b=4a, the number of longitude lines 5 was smaller than the number of latitude lines 6, and the mesh texture became unstable, so the measurement was discontinued.

Next, another embodiment of the present invention will be shown.

The above embodiment uses a mesh-like traveling twisted body that travels in a so-called straight line.
The twisted body 11 shown in FIG. 10 is a perforated disc-shaped twisted body.
rotates in the circumferential direction with its center or outer periphery as a reference.

In this case as well, the rectangular punched holes provided in the disc-shaped twisted body 11 have the same effect as the mesh 7 of the twisted body 1 that runs in a straight line.

In the device of the present invention described above, the mesh of the running twisted body is made into a rectangular shape in which the length a in the yarn drawing direction is small and the length b in the running direction of the twisted body is increased. Compared to a mesh twisted body, the suction force can be increased without reducing the frictional force between the twisted body and the fiber bundle, and the length a of the mesh yarn in the drawing direction is made smaller. Wind cotton on the body
It is extremely economical because it is possible to prevent the generation of band-like adhered cotton, and furthermore, excellent effects can be obtained simply by changing the structure of the net.

Furthermore, due to the above-mentioned effects, it can be used at a higher speed than before, which can greatly contribute to improving productivity.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional adsorption twisting spinning device, Fig. 2 is a vertical sectional view of its main parts, Figs. 3 to 6 show the network structure of the twisted body of the conventional device, and Fig. 3 is a flat structure. , Figure 4 is the twill structure, Figure 5
The figure shows a twisted structure, FIG. 6 shows a semi-twisted structure, FIG. 7 is a longitudinal cross-sectional view of the device of the present invention in the direction of yarn withdrawal, and FIGS. 8 and 9 show the mesh of the twisted body of the device of the present invention. Fig. 8 shows a flat structure, Fig. 9 shows a twisted structure, and Fig. 10 shows another embodiment of a twisted body. 1... Twisted body with network structure, 2... Fiber supply nozzle, 3... Suction duct, 7, 12...
...Mesh, a... Length of the mesh in the thread pulling direction, b... Length of the mesh in the running direction of the twisted body.

Claims (1)

[Scope of Claims] 1. In an adsorption twisting spinning device in which a fiber supply nozzle and a suction duct are arranged opposite to each other with a traveling twisted body having a net structure sandwiched therebetween, the unit size of the rectangular mesh of the twisted body is A twisted body for an adsorption twisting spinning device, characterized in that: is set within the following range. 3a≦b where a... Length of the mesh in the thread pulling direction b... Length of the mesh in the running direction of the twisted body.