JPS63288232A - Guide roller device for core filament of spinning machine - Google Patents

Abstract

PURPOSE:To suppress formation of fly waste on a core filament, by providing guide rollers on the same shaft as that of friction rollers rotated and driven by a front top roller and simultaneously rotating the guide rollers with the friction rollers. CONSTITUTION:Friction rollers 2 and 2 rotated and driven by a front top roller and guide rollers 1 and 1 are engaged and inserted in both ends of one shaft 3. Coil springs 7 are housed in circular recessed parts 6 to urge the guide rollers 1 to the side of the ends in the shaft direction of the shaft 3. The guide rollers keep a proper rotational speed to prevent formation and deposition of fly waste.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a guide roller device for guiding and supplying a core filament between a front top roller and a front bottom roller in a core yarn spinning machine.

[Prior art and its problems]

Generally, in a core yarn spinning machine, a roving is drafted to form a sheath, a core filament is fed to the center of the sheath, and the sheath is wound around the filament to form a core yarn. FIG. 3 is a side view showing a schematic configuration of a draft part of a spinning spinning machine for core yarn. This draft bar 1O guides the roving 21 from an introduction port I6 called a trumpet between the back top roller 17 and the back bottom roller 18, passes it between the top apron 19 and the bottom apron 20, and connects it to the front top roller 12 and the front This is the part that leads between the bottom rollers 13. The surface speeds of the back rollers I 7, 1B, aprons 19, 20, and front rollers 12.13 are increased in sequence, and the roving 21 is transferred from the back rollers I 7.18 to the front via the apron 19.20. While moving to the rollers 12 and 13, it is stretched and formed into a sheath 14 of a predetermined thinness. The core filament 15 is supplied between the front top roller 12 and the front bottom roller 13 simultaneously with the sheath 14 when the sheath 14 passes between the front top roller 12 and the front bottom roller 13 in the final stage of the drafting process. Ru. In the prior art, as a 41il for guiding the core filament 15 to the same position as the sheath 14 between the front top roller 12 and the front bottom roller 13, the core filament 15 is placed on the circumferential side of a disc-shaped member 1° having a certain thickness dimension. A groove is formed to guide the disc-shaped member l.
Position ゛ above the front top roller 12, and draft bar! Generally, it is fixedly attached to a fixed part of 0 without being rotated. By the way, in the fixedly attached guide mechanism as described above, static electricity is generated in the core filament 15 mainly due to friction between the core filament 15 which is sequentially supplied and the disk-shaped member B. Become. On the other hand, fine cotton dust is floating in the air around the spinning machine, which is attracted to the statically charged core filament 15 and gradually aggregates at the contact area between the core filament 15 and the disc-shaped member 1''. This causes the formation of a lump of dust called fly fluff.When this fluff grows to a certain size, it reaches between the front rollers I2 and 13 while remaining attached to the core filament I5, and the sheath I4 adheres to the fluff. The core filament 15 will be wrapped around the core filament 15 as it is, and the quality of the core yarn will be significantly impaired. As shown in FIG. In some cases, the free rotation of the spinning frame may be impaired by the adhesion of dust or dirt, and in extreme cases, the spinning machine becomes unable to rotate, which is equivalent to a fixed state, and such a situation occurs quite frequently. In a factory where a draft bar 10 is constructed and a large number of spinning machines are installed, it is extremely difficult to manage the guide roller so that it can always freely rotate.

[Purpose of the invention]

The present invention has been devised in view of the above problems and to effectively solve them. Therefore, the object is to provide a guide roller device for a core filament of a spinning machine that can reliably maintain the rotational shape of the guide roller, suppress the formation of fluff on the core filament, and contribute to improving the quality of the core yarn. There is a particular thing.

[Means to solve the problem]

A guide roller device for a core filament of a spinning machine according to the present invention has the following configuration in order to solve the problems of the prior art and achieve the objectives. That is, a guide roller device that guides a core filament between a front top roller and a front bottom roller includes a friction roller that contacts the front top roller and is rotationally driven by the front top roller, and is coaxial with the friction roller. A guide roller is provided above and rotates together with the friction roller. Note that the surface speed of the guide roller increases in proportion to the guide roller diameter if the rotational speed is constant, but the rotational speed is determined by the ratio of the friction roller diameter and the front roller diameter. In order to ensure a suitable working space between the guide roller and the front roller, the guide roller diameter is made smaller than the friction roller diameter, and therefore the surface speed of the guide roller is smaller than the surface speed of the friction roller. On the other hand, in order to increase the surface speed of the friction roller, the diameter of the friction roller cannot be made much larger than the diameter of the front roller. In conclusion, it is desirable that the surface speed of the guide roller be as close as possible to the core filament supply speed, and although it varies depending on the material of the core filament, an appropriate working space should be secured between the guide roller and the front roller, and a It is sufficient to maintain a minimum surface velocity that does not cause cotton to form or accumulate on the core filament.

[Effect]

The guide roller device for a core filament of a spinning machine according to the present invention rotates together with the friction roller, and the friction roller contacts the front top roller and is rotationally driven by the front top roller. The front roller is used as a rotation drive source, and is forcibly rotated through a friction roller to maintain an appropriate rotation speed to suppress the friction phenomenon between the core filament and the core filament to at least the minimum necessary level, and to prevent the formation and accumulation of fluff. prevent.

【Effect of the invention】

As is clear from the above explanation, according to the present invention, the following erosion effects are exhibited. That is, it is possible to reliably maintain the appropriate rotational state of the guide roller, suppress the formation and accumulation of fluff, and contribute to improving the quality of the core yarn.

【Example】

A preferred embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
This will be explained with reference to the figures. FIG. 1 is a front half-sectional view showing an embodiment of the core filament guide roller device according to the present invention, and FIG. 2 is a side view showing a draft bar of a spinning frame equipped with the core filament guide roller device of FIG. 1. It is a diagram. In FIG. 1, 1 is a guide roller and 2 is a friction roller, which are provided in two rows symmetrically in the figure. Each guide roller 1.1 and friction roller 2.2 is fitted on both ends of one shaft 3. The shaft 3 is rotatably supported by a dry bearing 4, and together with the shaft 3, a guide roller l. 1 and friction rollers 2, 2 are configured to be integrally rotatable. Reference numeral 5 denotes a holder that supports the shaft 3 by fitting the dry bearing 4 therein. A circular recess 6 having a diameter slightly larger than the diameter of the guide roller I is formed on one end surface of the friction roller 2. The circular recess 6 is formed in one end surface of the friction roller 2 to urge the guide roller 1 toward the axial end of the shaft 3. A coil spring 7 is housed within the coil spring 6. Both ends of the shaft 3 are threaded, and a nut 8 for adjusting the axial position of the guide roller I is screwed into the shaft 3. One end of a leaf spring 9 in the form of a leaf spring is fixed to the center of the holder 5. As shown in FIG. 2, the leaf spring 9 is bent at its approximately central portion, and is curved from the bent portion to the holder 5 (Ill). The guide roller is attached to the top frame 11, which is the fixed side part of the draft part 10, through the guide roller. The axial position of the shaft 3 with respect to the front top roller 12 is adjusted by a coil spring 7 and a nut 8. By moving the nut 8, which is threaded into the screws cut at both ends of the shaft 3, in the axial direction, the guide can be adjusted. The core filament 15 hanging on the roller I is adjusted to be located approximately at the center of the base 14 passing between the front top roller 12 and the front bottom roller 13.The surfaces of the front top roller 12 and the front bottom roller 13 The speed is approximately equal to the speed of the sheath 14 and the core filament 15, and the selected speed varies depending on the fiber material, but is on average 10,000 ix/s.
In this embodiment, the surface speed of the guide roller l is approximately 3.0 (10+u+/min).
Moreover, the diameter of the guide roller 1 and the diameter of the friction roller 2 are set so as to ensure sufficient work space. Specifically, the diameter of Furikunyon roller 2 is 3h x 1
The diameter of the guide roller 1 is set to hx.

[Brief explanation of drawings]

FIG. 1 is a front half-sectional view showing an embodiment of the core filament guide roller device according to the present invention, and FIG. 2 is a side view showing the draft part of a spinning frame equipped with the core filament guide roller device of FIG. 1. 3 are side views showing a schematic structure of a draft bar of a spinning machine for core yarn. l...Guide roller, 2...Friquency roller,
l2...Front top roller, 13...Front bottom roller

Claims (1)

[Claims] (1) In a guide roller device that guides a core filament between a front top roller (12) and a front bottom roller (13), the core filament is brought into contact with the front top roller (12) and guided by the front top roller (12). A spinning machine comprising: a rotationally driven friction roller (2); and a guide roller (1) installed coaxially with the friction roller (2) and rotating together with the friction roller (2). Guide roller device for core filament.