JP2548367Y2 - Plying machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plying machine for winding a plurality of single yarns into a plying yarn.

[0002]

2. Description of the Related Art Generally, as a yarn winding machine, a grooved drum for rotating a winding package and traversing the yarn supplied to the winding package as a yarn winding device is widely used. Used.

[0003]

However, with the above-described plying machine, a single yarn of a long fiber made of, for example, nylon, polyester or other chemical fiber and a single yarn of a short fiber such as wool or cotton are plied. In this case, the former is over-fed and yarn breakage is likely to occur, and when this yarn splitting portion reaches the intersection of the traverse grooves of the grooved drum, it enters the spiral groove in the opposite direction, and a so-called split winding is formed. There was a problem that it occurred frequently.

According to the study of the inventor, the above-mentioned overfeed phenomenon is presumed to be due to the following causes. That is, generally, in a plying machine, a chrome-plated metal roller is used as a guide roller for guiding the plying yarn, but as shown in FIG.
When the combined yarn 15 obtained by bundling the single yarn 1a of the long fiber and the single yarn 1b of the short fiber at the combining portion 52 is wound and passes, it is generated due to friction, contact, separation and the like with the metal roller 51. Due to the static electricity, the single yarn 1a of the long fiber is more likely to be attracted to the surface of the metal roller 51, and the single yarn 1a is temporarily attached to the too smooth surface of the metal roller 51, and then the drawing side. , So that the filament 1a
It is likely to be a sagging overfeed condition.

In order to solve the above-mentioned conventional problems, the inventor has conducted various studies on the behavior of the yarn in the guide roller portion, and as a result, the inventor has completed the invention. It is an object of the present invention to provide a twining machine capable of preventing occurrence of split winding when winding a double thread with a drum.

[0006]

In order to achieve the above-mentioned object, a twining machine according to the present invention comprises a grooved drum for driving a winding package to rotate and traversing a double thread supplied to the winding package. In the plying machine, the fulcrum guide for guiding the plying yarn to the grooved drum is constituted by a ceramic roller having a flange rotatably supported by a rolling bearing, and the center axis of the ceramic roller is connected to the roller. Inclined to the yarn feed path of
The yarn supplied to the roller is slidably contacted with the brim portion of the roller and then wound around the small diameter portion of the roller.

In the present invention, alumina, zirconia, titania and other various ceramics can be used as the ceramic material constituting the ceramic crawler. And the roller is preferably grounded to the frame of the yarn winding machine via a bearing.

[0008]

In the twining machine of the present invention, the fulcrum guide for guiding the twining yarn to the grooved drum is formed of a ceramic roller rotatably supported by a rolling bearing, so that the single yarn of the chemical fiber long fiber is used. The ceramic crawler rotates with low torque and reduces friction with each single yarn even when winding a combined yarn that is combined with a single yarn of short fiber such as wool or cotton and feeding it to a grooved drum. In addition, both single yarns have a small amount of electrostatic charge, and the surface of the ceramic is porous, and the single yarn of long fiber is unlikely to stick. Separation winding at the drum is also unlikely to occur.

[0009] Further, the plying yarn supplied to the ceramic roller comes into sliding contact with the flange portion (specifically, the inner side surface of the collar portion) of the roller, and then enters the small diameter portion and is wound therearound. False twist is applied to the ply yarn by sliding contact with the collar,
Since the fluff of the single short fiber is entangled with the single yarn of the long fiber, and the combined yarn is integrated, the split winding at the grooved drum portion is more reliably prevented.

If the ceramic roller is made of a conductive ceramic and is grounded to the frame of the yarn winding machine via a rolling bearing, the amount of charge due to the static electricity generated in the roller portion is reduced, and an overfeed phenomenon caused by the static electricity is caused. Is prevented, so that the number of windings is further reduced.

[0011]

1 and 2, an embodiment of the present invention will be described. In the figure, 1a and 1b are yarn supply packages 2
a, 2b are tensioners for applying tension to these single yarns, 4 and 5 are lower guide rollers, 6
Denotes an upper guide roller. Reference numeral 7 denotes a spring-pressed disk type tensor, and reference numeral 8 denotes a yarn cutter, all of which are attached to a bracket 9 that supports the upper guide roller 6. The illustration of the thread breakage detection device provided on the output side of the tensor 3 is omitted.

Reference numeral 11 denotes a grooved drum which is rotationally driven by a drive mechanism (not shown), and has an endless spiral traverse groove 12 formed on the surface thereof. Reference numeral 13 denotes a winding package which is pressed onto the grooved drum 11 by a cradle arm (not shown) and is driven to rotate by the drum.

Reference numeral 20 denotes a plying yarn 1 supplied from 7 parts of a tensor.
A fulcrum guide for winding the fiber 5 around the drum 5 and feeding it to the grooved drum 11, a ceramic roller 21 made of alumina is rotatably mounted on a steel support shaft 22 by a rolling bearing (a ball bearing in this embodiment) (not shown). To support the support shaft 22
Is mounted on a steel plate bracket 23 which is fixed to the frame 16 of the yarn winding machine.

The ceramic roller 21 has a thread winding shape in which a small diameter portion 24 and a brim portion 25 are connected to each other. As shown in FIG. The extended line is inclined without being orthogonal to the chain line 17) so that the twine 15 is attached to the inner surface 25 of the collar 25.
After being slid into contact with a, it is arranged so as to be wound around the small diameter portion 24.

The yarn 15 running out of the ceramic roller 21 is engaged in the traverse groove 12 of the grooved drum 11, and is traversed by the traverse groove 12 in the right and left direction during rotation of the drum. The fulcrum guide 20 functions as a fulcrum of the composite thread 15 that swings at an angle. In this embodiment, the lower guide rollers 4, 5 and the upper guide roller 6 are also made of alumina.

In the plying machine 30 having the above-described structure, the single yarns 1a and 1b, the tensions of which are adjusted by the tensor 3, pass through the upper guide roller 6 and are bound and bound at the tensor 7 portion. At this time, the composite yarn 15 slides on the inner surface 25a of the flange portion 25 and is falsely twisted, and is supplied to the grooved drum 11 from the small diameter portion 24, and is wound. It is wound around a package 13.

At this time, since the yarn 15 is wound around the ceramic roller 21 made of ceramics, the friction between the yarn 15 and the roller is small, the generation of static electricity is small, and the roller surface is porous. And it is not too smooth.
To the single yarn 1b of the short fiber. Furthermore, since the plying yarn 15 slides on the inner side surface 25a of the rotating brim portion 25 and is false-twisted, the two single yarns 1a and 1b are integrated and in a good plying state and the traverse groove 12 of the grooved drum 11 , And almost no split winding occurs.

In this embodiment, since the lower guide rollers 4, 5 and the upper guide roller 6 are also made of ceramic, there is an advantage that, for example, winding of the single yarn 1a around these rollers at the time of yarn breakage can be prevented. Things.

FIGS. 3 and 4 show another embodiment of the present invention, in which the present invention is applied to a yarn winding machine 40 having no upper guide roller 6. FIG.
In the figure, the same or corresponding parts as in FIG. 1 are denoted by the same reference numerals.

In this embodiment, the single yarns 1a and 1b having passed through the tensor 3 are guided by the guide grooves 8a of the yarn cutter 8.
, And supplied to the grooved drum 11 via the fulcrum guide 20. The ceramic roller 41 of the fulcrum guide 20 has a V-shaped guide groove 42, and the yarn 15 supplied from the yarn cutter 8 is supplied to the ceramic roller 4.
After slidingly contacting the inner side surface 43a of the one flange portion 43, it is wound around the small diameter portion 44 which is the bottom of the V groove. Then, false twist is applied to the composite yarn 15 by the sliding contact. The point that the ceramic roller 41 is rotatably supported on the support shaft 22 by a ball bearing is the same as in the above embodiment.

After passing through the small-diameter portion 44, the plying yarn 15 is slid in contact with the inner side surface 45a of the other side flange portion 45 by the swing indicated by the arrow R by the traverse groove 12, and is further false-twisted (the collar portion). The yarn is fed to the grooved drum 11 without swinging to the side 45) or without being subjected to the false twist (swinging to the side away from the collar 45). The unifying action of the composite yarn 15 by the false twist and the single yarn 1 of the long fiber by the ceramic crawler 41.
The overfeed prevention effect of a is the same as in the previous embodiment.

The present invention is not limited to the above embodiments. For example, the union of the single yarns 1a and 1b may be performed at the upper guide roller 6 in FIG. Upper guide roller 6 exclusively for plying yarn
Also, it is preferable that the frame is made of ceramic or made of conductive ceramic and grounded to the frame 16, so that the overfeed of the single yarn 1a at the time of joining can be prevented.

In the above description, the combination of the single filament of the long fiber and the single filament of the short fiber has been described. This invention can be applied to a yarn machine.

[0024]

[Effect of the invention] As described above, according to the invention,
Since the overfeed of the single yarn caused by static electricity and sticking to the roller at the ceramic roller portion constituting the fulcrum guide is prevented, and false twist is applied by sliding contact with the collar portion of the ceramic roller, the plying yarn is good. The yarn is supplied to the grooved drum in an integrated state, and the split winding in the grooved drum portion can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a yarn winding machine showing an embodiment of the present invention.

FIG. 2 is a front view of a fulcrum guide section in FIG. 1;

FIG. 3 is a perspective view of a main part of a yarn winding machine showing another embodiment of the present invention.

FIG. 4 is a plan view of a fulcrum guide section in FIG. 3;

FIG. 5 is a schematic front view for explaining an overfeed phenomenon in a conventional metal roller portion.

[Explanation of symbols]

1a ... single thread, 1b ... single thread, 7 ... tensor, 11 ... drum with groove, 12 ... traverse groove, 13 ... winding package, 15 ... combined thread, 16 ... frame, 20 ... fulcrum guide,
DESCRIPTION OF SYMBOLS 21 ... Ceramic crawler, 22 ... Support shaft, 23 ... Bracket, 24 ... Small diameter part, 25 ... Collar part, 25a ... Inner surface, 2
Reference numeral 6: central axis, 30: twining machine, 40: twining machine, 41: ceramic crawler, 43: brim, 43a: inner surface, 44
... Small diameter part.

Claims (2)

(57) [Scope of request for utility model registration] 1. A fulcrum guide provided with a grooved drum for rotating a winding package and traversing a yarn supplied to the winding package, the fulcrum guide for guiding the yarn reaching the grooved drum. Is formed of a ceramic roller having a flange rotatably supported by a rolling bearing, and a central axis of the ceramic roller is inclined with respect to a yarn feeding path to the roller so that the yarn is fed to the roller. A plying machine characterized in that the yarn is wrapped around the small diameter portion of the roller after slidingly contacting the brim portion of the roller. 2. The yarn winding machine according to claim 1, wherein the ceramic roller is made of a conductive ceramic, and the roller is grounded to a frame of the yarn winding machine via a rolling bearing.