JP2540663B2 - Opening device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber-spreading device, in particular, a cotton-feeding section for feeding cotton for fiber-spreading, which is suitable for fiber-spreading of lump cotton made of fine fibers, and a cotton-feeding section. Pre-disperse the cotton for opening fiber introduced from the
The present invention relates to a fiber spreading device including a drafting unit for aligning and a fiber spreading cylinder that follows the drafting unit.

2. Description of the Related Art Conventionally, in this type of opening device, a drafting portion has a plurality of roller pairs in which a saw-toothed garnet wire is spirally wound or a plurality of grooved roller pairs provided with axially extending grooves. Was composed by.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the conventional spreader, in the drafting unit, in parallel with the axis of the top roller and the Bottom roller of each roller pair,
That is, the fibers that enter the gripping portions of both rollers at a right angle to the drafting direction are hardly dispersed, drafted, or aligned, and sufficient opening is not performed even by the opening cylinder. I increased the number of times and got a uniform web.

However, in order to obtain a thin web, when extremely thin fibers, for example, fibers having a denier of 1 or less, and crimped, cut and packed, are used, the lumped cotton produced by these processes (so-called "scallops") is used. )) Is not easily opened, and the fibers are cut by a card process with a strong action, and at the same time, many pillings occur, and it is impossible to obtain a uniform web.

The present invention has been made in order to solve such a problem, and has a block shape that enters the drafting portion in parallel with the grip line of the roller pair of the drafting portion, that is, in parallel with the axes of the top roller and the bottom roller. It is an object of the present invention to provide an opening device capable of dispersing, drafting, aligning, that is, opening a fiber group.

Means for Solving the Problems In order to achieve the above object, the present invention provides a cotton feeding part for supplying cotton for fiber opening and a cotton for fiber opening introduced from the cotton feeding part, which is dispersed and drafted in advance. In a spreader comprising a drafting unit for stretching and aligning, and a fiber-spreading cylinder that follows this drafting unit, each of the drafting units has a ring-shaped sawtooth member, and a sawtooth member of a top roller. Consists of a plurality of roller pairs arranged so that the saw tooth members of the bot m roller are located between the saw tooth members of the bot m roller, and the top roller of each roller pair rotates differently from the corresponding bot m roller. A driving means that can be driven at a speed is provided, and in this drafting portion, each top roller is driven at a peripheral speed higher than that of the corresponding bottom roller.

Action The drafting portion has a ring-shaped sawtooth member, and the sawtooth member of the top roller is between the sawtooth members of the Bottom roller,
The saw tooth member of the bottom roller comprises a plurality of roller pairs arranged so as to be located between the saw tooth members of the top roller,
The top roller in each roller pair is provided with a drive unit capable of driving at a different rotation speed from the corresponding Bottom roller,
In this drafting section, each top roller is driven at a higher peripheral speed than the corresponding Bottom roller, so that the fiber mass in the opening cotton that has entered the drafting section parallel to the axis of each roller is the upper layer in the vertical direction. While being displaced by the speed difference between the lower part and the lower part, they are dispersed in the horizontal direction by the combing action of the saw tooth members of the top roller and the bottom roller, and further drafted and aligned by the drafting action of each roller pair. Becomes Therefore, lumpy fibers are also sufficiently opened in the opening cylinder, and even fine fibers are not cut or pilling occurs in the card process.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the fiber opening device shown in the drawings.

In the drawings, the same reference numerals indicate the same or corresponding parts.

In FIG. 1, reference numeral 1 is an opening device, and a cotton feeding part 2 and
It comprises a drafting unit 3 and a fiber-opening cylinder 4.

The cotton feeding part 2 presses the fiber for fiber opening above the apron 6 and the apron 6 spanned by the supply rollers 5 and 5, which are provided with a front and rear space. And a pressing roller 7 provided on the. A drive means (not shown) is provided for each supply roller 5,
5, the driving means are synchronized with each other, but the driving means may be provided only on one of the supply rollers 5. The apron 6 may be a lattice feeder.

The drafting unit 3 is composed of two pairs of rollers 8, 9 and 10, 11 and each roller is driven by an electric motor as a driving means. Reference numeral 12 is a clearer roller, which includes a front top roller 11 and a fiber-spreading cylinder body 13.
Are provided so as to contact the respective saw teeth.

The peripheral speed of the back top roller 9 is about 2.0 to 3.0 times that of the back bot mroller 8, the peripheral speed of the front bot m roller 10 is about 9.0 to 10.0 times that of the back bot m roller 8, and the front top roller 11 The peripheral speed of the backbot mroller 8 is about 9.0 to 45.0 times. That is,
The peripheral speed of the top roller 9 corresponding to the bot m roller 8 is about 2.0 to 3.0 times the peripheral speed of the bot m roller 8, and the peripheral speed of the top roller 11 corresponding to the bot m roller 10 is about 1.1 that of the bot m roller 10. ~ 4.5 times. These speed ratios are obtained by electrically controlling the number of revolutions of each electric motor that is a driving means of each roller.

Note that these speed ratios can also be obtained by a speed reducer such as a gear.

The fiber opening cylinder 4 includes a cylinder body 13, an upper casing 14, and a lower casing 15. The cylinder body 13 is driven at a peripheral speed higher than that of the front top roller 11. In addition, 16 is a frame and 17 is a doffer.

Eight flat wire cloths or metallic cloths are fixed around the cylinder body 13 at equal intervals in the circumferential direction. If necessary, the garnet wire may be wound around the entire cylinder body 13.

2 to 4 show the positional relationship of each roller pair 8, 9 and 10, 11 in the drafting unit 2, and further, each roller 8, 9, 10, and 11 is a sawtooth ring 8a, 9a, 10a, and It is shown to be composed of 11a. Serrated rings 8a, 9a, 10a and 1
1a is fitted on the roller shaft via spacers 8b, 9b, 10b and 11b, and is fixed to each roller shaft by the keys 8c, 9c, 10c and 11c. As seen in FIGS. 3 and 4, the saw tooth rings 9a, 1 of each top roller 9,11 are shown.
The saw tooth of 1a is located between the saw teeth of the saw tooth ring of each bot mroller 8,10, and at the same time the saw tooth of the saw tooth ring of each bot mroller 8,10 is between the saw tooth of 8a, 10a of each top roller 9,11. Is located in. The tip of the saw tooth of the top roller 9 and the tip of the saw tooth of the bottom roller 8 are intricate, and the gauge G (see FIG. 7) between both rollers is minus. Thus, when the gauge G is negative, the action is strong, and when the gauge G is positive, the action is mild, and these gauges are adjusted as necessary.

A roller having such a ring-shaped saw-tooth member is already known as a drafting device roller, as described in, for example, Japanese Patent Publication No. 48-575.

As shown in FIG. 3 and FIG. 4, the opening cotton F held by the saw teeth of the top roller 9 and the saw tooth of the bot mul roller 8 is affected by the respective saw teeth, and now compared to the bot mul roller 8, When the top roller 9 is driven at a relatively high rotation speed, the peripheral speed of the top roller 9 is changed to the bottom roller 8
In comparison with the above, the opening cotton F is subjected to combing action while being displaced between the upper layer portion of the top roller 9 which is acted on by the sawtooth and the lower layer portion of the bottom roller 8 which is acted on by the sawtooth. . Therefore, since the opening cotton F is shifted between the upper layer portion and the lower layer portion while being drafted between the back roller pair 8 and 9 and the front roller pair 10 and 11, even if it is lump cotton, it is sufficiently decomposed or dispersed. Furthermore, even the lumpy cotton that has entered the drafting section 2 in parallel with the respective roller axes can be sufficiently dispersed, drafted and aligned, and the degree of opening is improved.

Now, take out the packed 0.5 denier, 2 inch cut polyester crimped fiber and take the apron (2-
5m / min) and back bot mroller (diameter 50mm) 5m
/ min, back top roller 10 to 15 m / min, front bottom roller 50 m / min, front top roller 400 m / min introduced into the drafting section to pre-open this fiber, and subsequent opening fiber cylinder 500 m / Open with min. By operating at 200-250 Kg / hr, feeding the obtained fiber to several card machines and performing one card process once, it was possible to obtain a very uniform web with few neps.

By increasing the number of roller pairs in the drafting section, it is possible to obtain a more uniform and high-quality web with less nep.

FIGS. 5 to 8 show an example of a drafting portion roller in which a pin serving as a sawtooth member is fixed in a ring shape around the roller shaft. That is, FIG. 5 shows a structure in which pins 8a, 9a made of mild steel are stud welded 18 on the outer circumference of the pipe-shaped roller shafts 8, 9, and FIG. 6 is shown in FIG. 9,9
The pin small holes 8d and 9d are provided in the pin, the pins 8a and 9a are inserted into the pin small holes 8d and 9d, the pins 8a and 9a are welded 18 inside the pipe, and then the pipe is divided into two pipes 8, 8 and 9, Welded and integrated 9 is shown. 7 and 8 show that pins 8a and 9a are integrally cast on rings 8 ', 8'and 9', 9 ', 9'having a width T, and these rings 8', 8'and 9 ', 9' A large number of 9's are fitted on the roller shaft, and a nut (not shown) is screwed and fastened to the outermost side, and at the same time, the shape of the side surface of the pin is shown. The cross section of each pin 8a, 9a has a raindrop shape, and the front surface acting on the fiber is rounded so that the fiber is not damaged or cut. The gauge G between the bottom roller 8 and the top roller 9 is positive and shows a case where the action is mild.

In this way, the roller pair to which the pin is attached as the sawtooth member can also achieve the same operation and effect as the sawtooth ring.

EFFECTS OF THE INVENTION According to the present invention, the fibers that enter the gripping portion of the roller in the drafting portion at a right angle to the drafting direction are subjected to the action of being displaced between the upper layer portion and the lower layer portion of the opening cotton while combing. Since the fiber is affected, even when the opening cotton is made of extremely fine fibers, the fibers can be sufficiently opened, and the cutting of fibers and the occurrence of pilling can be extremely reduced in the subsequent steps.

[Brief description of drawings]

FIG. 1 is a schematic side view of an opening device showing an embodiment of the present invention, FIG. 2 is an enlarged view of a main part of the opening device of FIG. 1, and FIG. 3 is drafting of the opening device of FIG. FIG. 4 is a partial front view of a back roller pair used in the section, FIG. 4 is a partial front view of a front roller pair similar to FIG. 3, and FIGS. FIG. 8 is a partial front view of a roller pair provided with a pin that can replace the roller pair, FIG. 7 is a partial front view of another roller pair, and FIG. 8 is a side view of the roller pair of FIG. 1 ... Opening device, 2 ... Cotton feeding unit, 3 ... Drafting unit, 4 ...
Opening cylinder, 5,5 …… Supply roller, 6 …… Apron, 7 …… Pressing roller, 8,9 …… Back roller, 10,11…
… Front roller, 12 …… Clearer roller, 13 …… Cylinder body, 16 …… Frame, 17 …… Doffer, 18…
… Welding, 8a, 9a, 10a, 11a …… Sawtooth members

Claims (1)

(57) [Claims] 1. A cotton feeding section for supplying opening cotton, a drafting section for preliminarily dispersing, drafting and aligning the opening cotton introduced from the cotton feeding section, and this drafting. In a fiber-spreading device including a fiber-spreading cylinder that follows the section, each of the drafting units has a ring-shaped saw-tooth member, and the saw-tooth member of the top roller is between the saw-tooth members of the Bottom roller, and the saw-tooth member of the Bottom roller. Comprises a plurality of roller pairs arranged so as to be located between the sawtooth members of the top roller, and is provided with a drive means capable of driving each top roller in each roller pair at a different rotation speed from the corresponding bottom roller. In the above, an opening device is characterized in that each top roller is driven at a peripheral speed higher than that of the corresponding bot m roller.