JPH0280624A - Open end rotor type fine spinning frame and cover yarn spinning method - Google Patents

Abstract

PURPOSE: To produce a covered yarn in a single process by feeding a filament yarn into the specific twisting mechanism of an open end rotor type spinning machine by the use of a constant feed control device, pulling out the filament yarn and then binding the filament yarn to a staple yarn in a forming zone. CONSTITUTION: This method for producing a covered yarn comprises feeding a single filament-like staple yarn into a feeding port 11 by the centrifuglal force of a combing roller, depositing the fed staple yarn on the inner maximum collection surface of the rotator portion 91 of a rotor 9 to form the core open end yarn of the covered yarn 14, allowing a filament yarn 1 to pass through the inner guide tube 5 of an axial portion by a difference between the inner and outer pressures of the rotor 9, feeding the filament yarn 1 into the inner forming zone of the rotator portion 91 and then binding the fed filament yarn 1 to the core open end yarn of the covered yarn 14 to form the surface layer of the covered yarn 14. A constant feed control device comprises a balloon control ring 2, a tension device 3 and a pair of feed rollers 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an open-end rotor spinning machine and a method for producing cover yarn by improving the spinning machine.

That is, the heating mechanism of the open-end rotor spinning machine has been improved, thereby developing a new method for spinning cover yarn.

[Prior art and its problems] General two-ply yarn
If you want to obtain an S-twist or Z-twist mechanism for medium-twisted parts and double-twisted wire using this technology, the manufacturing sequence is first to use a two-ring spinning machine for a single-gauze finish, and then to use a conventional heating machine to finish it. to create a two-stranded wire structure. It lacks unity and continuity. It should be noted that such a two-stranded wire manufacturing method can reach a spinning speed of only 30 m 2 /1 n. In other words, there is a drawback that production costs cannot be lowered due to the low production speed.

[Object of the Invention 1] An object of the present invention is to provide an improved open-end rotor spinning machine and a method for manufacturing cover yarn using the same. This allows the cover yarn to be spun in a single step.

Another object of this invention is to increase the spinning speed to 180 m/1n and reduce the wire breakage rate, i.e., increase the production volume, by using an improved open-end rotor spinning machine and spinning cover yarn using it. This reduces production costs.

Another object of the present invention is to provide an improved open-end rotor spinning machine and method for spinning cover yarns therewith for spinning cover yarns of a wide variety of different constructions, if desired.

[Summary of the invention] In order to overcome the drawbacks of the above-mentioned intra-membrane spinning method and produce cover yarn at high speed with a simpler process, the present invention incorporates the high-speed performance of an open-end rotor spinning machine and further improves this. This is an improved version.

The main improvement was a new design of the heating mechanism of the open-end rotor spinning machine. That is, a heating mechanism is combined with a hollow rotor and a plurality of guide duplexes, a fixed amount feed control device is used to continuously feed a fixed amount of filament yarn, and the filament yarn is pulled out and combined with a short fiber in a forming zone, so that the surface is made of filament yarn. , a method for producing a cover yarn whose core is an open-end yarn.

[Examples] The above-mentioned objects of the present invention and characteristics that have not been mentioned yet will be explained in detail in the following Examples and the accompanying drawings to demonstrate the novelty and practicality of the present invention.

Improved hollow rotor 9 as shown in FIG.
is installed in the spinning chamber 8 of the spinning machine body. Since the hollow rotor 9 is easy to attach and remove, it does not affect the practicality of the spinning machine.

The sliver is separated into short single fibers by a high-speed rotating combing roller (not shown), and further fed into the feeder port 11 by the centrifugal force of the combing roller.
It is deposited on the largest collection surface within the rotor section 91 of the hollow rotor 9. With the high speed rotation of the hollow rotor 9, the short fibers are heated and become open-ended yarns in the core of the cover yarn 14. At the same time, due to the high speed rotation of the hollow rotor 9,
A pressure difference is generated between the pressure outside 4 of the hollow rotor 9 (atmospheric pressure) and the pressure inside 10 of the hollow rotor 9, and due to this pressure difference, the filament yarn 1 is is passed through the guide tube 5 and fed to the molding zone in the rotor section 91. The balloon control ring 2, the tension device 3, and the pair of feed rollers 6 control the continuous metering of the filament yarn 1 into the forming zone. Then, through the separator 12 and the pick-up tube (not shown), the filament yarn 1 and the open-end yarn are combined to form the surface layer of the cover yarn 14. The winding roller 13 winds up the cover yarn so that it can be continuously formed (produced).

From FIG. 2, the hollow core shaft portion 92 of the hollow rotor 9 and the rotor portion 9
1, the hollow core shaft part 92 is provided with a cylindrical hole, and can also be configured with a conical hole. The guide tube 5 is a thin tube with a cylindrical outer shape, and the outer shape can be set to a conical shape. The guide tube 5 is fitted into a hole in the hollow core shaft portion 92 and feeds the filament yarn. By changing the position of the guide tube 5, it is possible to control one type of cover, and at the same time, it is also possible to adjust the thickness of the cover twist. A bearing 51 is mounted on the guide tube 5 and is fitted into the hollow core shaft portion 92.

The characteristics and advantages of the present invention will be demonstrated below using experimental examples.

Experimental condition 1, pure sliver: 2901Jr /6 yd3
．． 8111 (1/inx 11/16+n2, feed roller rotation speed: 25φIIIX 12r, D, lll.

3. Carding roller rotation speed: 65φMIX 8,00Or, p, 11°) (anna
i 65'' Working angle 65'' Back angle 44°, Tooth height 4. Omn+ needle density 10 points/1nch4, rotor speed: V type 65φl1m/45,0OOr, 08m.

5. Take-up roller rotation speed: 65φ -g+x 367r, p, a, 1
80m/win6, feeding yarn tension 0 to 35 (lf) According to the conditions 1 to 6 above, a structure of polyester filament yarn winding oven-end short fiber yarn is obtained.

Its size is 75tex, and the degree of heating of the covering per meter is approximately 750'1llpH. The variation coefficient (CV%) of this covering heating degree is less than 8%, and the breaking strength can reach 12gf/t6x. The variation coefficient of breaking strength is about 10%, and the breaking elongation rate reaches 8%.

Also, change the position of the guide tube as shown in Figures 3, 4, and 5.
By changing to the three different positions A, B, and C shown in the figure, cover yarns with various different structures as shown in Figures 3-1, 4-1, and 5-1, respectively, can be spun. . If it is desired to increase the production rate to 1801/Win, the rotational speed of the rotor should be increased to 80.000 rpm, the tension of the feed yarn should be increased to 45Qf, and the position of the guide tube should be adjusted to position B. In addition, since this invention twists two single yarns together using a hollow wire and a tension plate or feed roller to create a cover yarn, one step of the twisting process can be omitted, saving mechanical power, manpower, space, and It has the advantage of reducing costs and can expand the applications of open-end rotor spinning machines. Furthermore, since filament yarn is used for the outer layer, the breaking strength can reach up to 12g/teX. Therefore, the cover yarn spun by this method is
It can be used for the warp and weft of shirttle fabrics and the yarns of knitting fabrics.

In addition, we can change the length, diameter and quantity of the guide tube 5, change the rotation speed of the hollow rotor 9, or arbitrarily change the rotation speed or rotation direction of other interrelated mechanisms. , cover yarns of different structures can be spun. In addition, if an electronic or mechanical automatic stop device is used, it is possible to automatically stop the cover yarn when a certain yarn breaks, thereby ensuring stable quality of the cover yarn.

The above description clearly shows the uniqueness of this invention. Regarding the basic equipment of open-end yarn forming on an open-end rotor spinning machine, it belongs to common sense within the membrane.
Since it is unrelated to the subject matter of this invention, it will be omitted here.

This invention is certainly the result of the inventor's many years of successful research, and to date there are still papers and patent claims in various countries around the world regarding the improvement of open-end rotor spinning machines for multilayer yarns. There are no submissions. Therefore, the novelty and practicality of the present invention are beyond doubt. Furthermore, when comparing many experiments with known techniques, the present invention has sufficient enhancement effects. If necessary, provide rimple as evidence.

In summary, the improved structure of the present invention is not particularly complex, but it certainly improves the method of spinning cover yarns. Therefore, any changes and modifications made within the spirit of the appended claims are intended to fall within the scope of the claimed invention.

[Brief explanation of the drawing]

Figure 1 is a structural sectional view of the improved open-end rotor spinning frame of the present invention, Figure 2 is an exploded view of the hollow rotor and guide tube of Figure 1, and Figure 3 is the improved open-end spinning machine of the present invention. FIG. 2 is a perspective view of an embodiment of a cover yarn spun on a rotary spinning frame, showing a regular cover yarn in order; Figure 3-1 shows the structure of the regular cover yarn spun in the example of Figure 3. FIG. 4 is another embodiment of a cover yarn spun on the improved open-end rotor spinning machine of the present invention, showing a tight cover yarn. Figure 4-1 shows the structure of the tight cover yarn spun in the example of Figure 4. FIG. 5 is another embodiment of a cover yarn spun on the improved open-end rotor spinning frame of the present invention, showing an irregular cover yarn. Figure 5-1 shows the structure of the irregular cover yarn spun in the example of Figure 5. 1... Filament yarn 2... Balloon control ring 3... Tension device 5... Guide tube 6... Feed roller 9... Hollow rotor 14... Cover lane shaft portion 91... Rotation Child part 92... Hollow core drawing Z (no change in content)

Claims (7)

[Claims] (1) An open-end rotor spinning machine consisting of one balloon control ring, a tension plate device, a hollow roller, a pair of feed rollers, a plurality of guide tubes, and a basic device for spinning open-end yarn, The hollow rotor has one rotor part (9
1) and a hollow core shaft part (92), the hollow part of the hollow core shaft part has a cylindrical or conical hole, and the plurality of guide tubes are elongated tubes with a cylindrical or conical outer shape, Each filament is inserted into the hollow part of the hollow core shaft part, and the filament is moved from the guide tube to the rotor part (91) by the pressure difference between the inside and outside of the rotor, which is generated by the high speed rotation of the hollow rotor.
An open-end rotor type spinning spinning machine that feeds the spinning spinning machine to the forming zone, where it is wound on an open-end yarn spun from short fibers using a basic open-end yarn device to create a cover yarn. (2) Claim (1), wherein the constant feeding of the filament is controlled by a balloon control ring, a tension plate device and/or a feed roller.
The open-end rotor spinning machine described in . (3) The open-end rotor spinning machine according to claim (1), wherein the guide tube to be fitted into the hollow rotor is a single guide tube or a plurality of guide tubes forming concentric circles. (4) A claim in which cover yarns with various structures are spun by changing the position, length, diameter, number of guide tubes, etc. and the rotational speed of the hollow rotor, or by changing the rotational speed and rotational direction to match each related part. The open-end rotor spinning machine according to item (1). (5) Utilizing the open-end rotor spinning machine according to claim (1), filaments are formed by controlling a ballane control ring tension plate device, a pair of feed rollers, and rotating one hollow rotor at high speed. The filament is fed quantitatively into one or more guide tubes through a pressure difference between the inside and outside of the hollow rotor, and the high speed rotation of the hollow rotor causes the filament to interact with the short fiber spun yarn within the forming zone of the rotor of the hollow rotor. A cover yarn spinning method characterized by forming a cover yarn by winding the yarn around the yarn. (6) The method for spinning a cover yarn according to claim (5), wherein the spun cover yarn has a structure in which the filaments are in the surface layer and the open-end yarn is the core. (7) A claim in which cover yarns with various structures are spun by changing the position, length, diameter, number of guide tubes, etc. and the rotational speed of the hollow rotor, or by changing the rotational speed and rotational direction to match each related part. The cover yarn spinning method according to item (5).