JP2000110035A - Draft switching device for three kinds of sliver in roving manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn having unevenness to the longitudinal direction of the yarn by supplying three kind of slivers at once to a drafting device of a roving manufacturing equipment (roving frame, rover, bobbiner) installed with a roller type drafting device, winding up as draftable single rove type thread bundle after individually varying the draft rate of the three kind of slivers and supplying this to the next fine spinning process. SOLUTION: This roving manufacturing equipment (roving frame, rover, bobbiner) is installed with three individually rotating back bottom rollers 8, 8', 8", back top rollers 9, 9', 9" on the drafting device, the three slivers 4, 5, 6 are supplied to each back bottom roller and back top roller, and the draft rates of the three kind of slivers are individually varied by individually controlling the three back bottom roller driving motors 27, 28 in a previously set speeds.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention facilitates the spinning of a special yarn having a change in color, thickness, texture, etc. in the longitudinal direction of a yarn to be supplied to a woven fabric, a knitted fabric, etc. in the spinning process, and relates to this. The present invention relates to a roving production apparatus for reducing costs.

[0002]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a roller shown in FIG. 1 for obtaining, for example, a yarn shown in FIGS. 7, 8 and 9 in a spinning process, and a roving fiber bundle shown in FIG. The back-bottom roller and the back-top roller are divided into three parts in a roving yarn manufacturing device that supplies roving yarn to the spinning process, such as a roving machine equipped with a drafting device, a rover, and a bobbiner. By independently controlling the speed according to the set speed program, the draft ratio of the three types of slivers supplied to each back bottom roller and the back top roller is arbitrarily changed, and the mixing ratio of the three types of fiber bundles in the roving traveling direction is adjusted. The present invention relates to a drafting device for obtaining one roving fiber bundle that can be drafted in a spinning step in which the spinning process has been changed.

That is, the roving fiber bundle 14 shown in FIG.
The different types of fiber bundles 29, 30, and 31 exist at different mixing ratios, and retain the form of one roving fiber bundle. Here, as an example, an embodiment in which a draft device of the present invention is provided to a roving machine for short fibers will be described with reference to the drawings.

[0004] In FIGS.
The three kinds of slivers 4, 5, and 6 prepared in the sliver 4 are guided to the respective pet guides 7, 7 ', and 7 ".
To the back bottom roller 9 and back top roller 8,
The sliver 5 is guided to the back bottom roller 9 'and the back top roller 8', and the sliver 6 is guided to the back bottom roller 9 "and the back top roller 8".

[0005] The sliver 4 is gripped by the back bottom roller 9 and the back top roller 8, the sliver 5 is gripped by the back bottom roller 9 'and the back top roller 8', and the sliver 6 is gripped by the back bottom roller 9 "and the back top roller 8". The slivers 4, 5, and 6 are joined near the entrance of the focusing guide 23 to form a roving fiber bundle 41, and the middle bottom roller 11 and the middle top roller 1 rotate at a constant speed.
It is led to 0.

The roving fiber bundle guided to the middle bottom roller 11 and the middle top roller 10 is sent out while being gripped between the bottom apron 25 attached to the middle bottom roller 11 and the top apron 24 attached to the middle top roller. A roving fiber bundle 14 is formed by passing through a front bottom roller 13 and a front top roller 12 rotating at a constant speed and being drafted respectively to change the mixing ratio of three types of fiber bundles into a roving fiber bundle 14.
The wire 5 is wound around the bobbin 16 while being twisted.

The back-top rollers 8, 8 ', 8 "and the back-bottom rollers 9, 9',
9 "has a mechanical structure as shown in Fig. 4. The back bottom roller 9 'is fixed by a key member 39 to a roller shaft 25 which is spanned over the entire length of the machine base. Roller shaft 2
5 is driven, and the back bottom roller 9 'fixed thereto rotates. The back bottom roller 9, 9 ″ is connected to the roller shaft 2 via oilless metal 37, 38.
Fitted in 5. A timing pulley 32 is fixed to the back bottom roller 9, a timing pulley 33 is fixed to the back bottom roller 9 ″, the timing boogie 32 is the timing pulley 18 and the timing belt 22, and the timing pulley 33 is the timing pulley 20 and the timing belt 21. The timing pulleys 18 and 20 are fixed to roller shafts 17 and 19, respectively, which are laid across the entire length of the machine, and the roller shaft 17 is driven by a motor 27 and the roller shaft 19 is driven by a motor 28. Therefore, the back bottom roller 9 is driven by the rotation of the motor 27, and the back bottom roller 9 ″ is driven by the rotation of the motor. Since the back top rollers 8, 8 ', 8 "are fitted into the roller shaft 42 via bearings, respectively, when the back top rollers 8, 9', 9" are pressed against the upper surfaces of the back bottom rollers 9, 9 ', 9 ", The rotational drive of the rollers 9, 9 ', 9 "is transmitted to the back top rollers 8, 8', 8", respectively. The back top roller 8 has the same surface speed as the back bottom roller 9, and the back top roller 8 'is the back bottom roller. At the same surface speed as 9 ', the back top roller 8 "rotates at the same surface speed as the back bottom roller 9".

In the draft device having the above-mentioned mechanical structure shown in FIGS. 2 and 4, the sliver 4 coming out of the Shino Kens 1 passes through the pet guide 7 and the back bottom roller 9.
Is guided to the back top roller 8. The sliver 5 coming out of Shino Kens 2 passes through a pet guide 7 'and is guided to a back bottom roller 9' and a back top roller 8 '. The sliver 6 coming out of Shino Kens 3 passes through a pet guide 7 "and is guided to a back bottom roller 9" and a back top roller 8 ".

When the motor 27 rotates at a set speed, the sliver 4 is connected to a timing pulley 18 fixed to a roller shaft 17 laid across the entire length of the machine base and a back bottom connected by a timing belt 22. The drive is transmitted to the timing pulley 32 fixed to the roller 9, guided to the focusing guide 23 while being gripped by the back bottom roller 9 and the back top roller 8, and the sliver 5 rotates at a speed set by the motor 26. As a result, the sliver 6 is guided by the focusing guide 23 while being held by the back bottom roller 9 ′ and the back top roller 8 ′ fixed to the roller shaft 25 laid across the entire length of the machine.
The back bottom roller 9 ″ is connected to a timing pulley 20 fixed to a roller shaft 28 traversed over the entire length of the machine base and a timing belt 21 by rotating a motor 28 at a set speed.
The drive is transmitted to the timing pulley 33 fixed to the focusing pulley 33, and guided to the focusing guide 23 while being gripped by the back bottom roller 9 ″ and the back top roller 8 ″.

The sliver 4, which has passed through the focusing guide 23,
5 and 6 become roving fiber bundles 41 and are guided to the middle bottom roller 11 and the middle top roller 10. At this time, the shape of the middle top roller 10 is a roller having a hollow structure shown in FIG. Thereby, the bottom apron 25 attached to the middle bottom roller 11
The roving fiber bundle 41 (slivers 4, 5, 6) guided between the top apron 24 attached to the middle top roller 10 is brought into a state of being pressed against the bottom apron 25 and the top apron 24 with a small gripping force. , It is easy to slip between the bottom apron 25 and the top apron 24.

Bottom apron 25 and top apron 24
Roving fiber bundle 41 (sliver 4,
5, 6) are front bottom rollers 13 rotating at a constant speed.
Is guided by the front top roller 12, and while being gripped by the front bottom roller 13 and the front top roller 12, a preset draft is added to the front bottom roller 13 as a roving fiber bundle 14 (fiber bundles 29, 30, 31). And front top roller 12
And wound on a bobbin 16 while being twisted by a fryer 15.

The fiber bundles 29 constituting the roving fiber bundle 14,
Draft magnification when spinning 30, 31 is
It is a numerical value of a calculation result obtained by dividing the speed of the front bottom roller 13 rotating at a constant speed by the speed of the back bottom rollers 9, 9 ', 9 ". The driving source of the back bottom rollers 9, 9', 9" Motor 26,2
When the speed of each of the speeds 7, 28 is changed by an individual speed control program, the back bottom rollers 9, 9 ',
9 "respectively. As a result, the speed of the front bottom roller 13 is changed to the speed of the back bottom roller 9,
Since the draft magnification, which is the numerical value of the calculation result obtained by dividing each at the speed of 9 ', 9 ", also changes for each,
Each of the fiber bundles 29, 30, and 31 has a thickness of a fiber group that changes in the roving traveling direction, and the roving fiber bundle 14 formed by bundling them into a single fiber bundle has a fiber bundle 29, The mixture ratio of 30, 31 changes.

The roving fiber bundle 14 in which the fiber bundles 29, 30, 31 whose fiber group thickness has changed with respect to the roving traveling direction has a fiber bundle form as shown in FIG. The mixing ratios of the fiber bundles 29, 30, 31 all conform to a preset speed control program.

[0014]

According to the first aspect of the present invention, in the roving production process which is a process preceding the spinning process, three back bottom roller driving motors 26, 27, 28 for controlling the draft ratio of three systems are provided. One roving fiber bundle 1 that can be drafted in the spinning process in which the mixing ratio of the three types of fiber bundles 29, 30, and 31 changes only by setting the speed control program
4 can be easily spun.

Further, if the roving fiber bundle 14 is used in the spinning process, it is possible to easily produce a special yarn having a color, thickness, texture, and the like changed in the longitudinal direction of the yarn, and to provide the yarn to the market at low cost. it can.

According to the second and third aspects of the present invention, the draft is formed by forming the middle top roller 10 into a roller having a hollow structure, so that the draft is formed by the front bottom roller 13, the front top roller 12, and the back bottom rollers 9, 9 ',
9 ", a one-zone draft between the back-top rollers 8, 8 ', 8", and the draft interval becomes larger than the fiber length of the fiber bundle, so that the fiber bundle easily comes off between the bottom apron 25 and the top apron 24. . Therefore, as shown in FIG. 3, by moving the focusing guide 23 up and down, the frictional resistance between the fibers of the fiber bundle is adjusted, so that the fiber bundle suppresses draft unevenness between the bottom apron 25 and the top apron 24, and accurately. Can be drafted.

[Brief description of the drawings]

FIG. 1, showing an embodiment of the present invention, is a side view of a roving production apparatus.

FIG. 2, showing an embodiment of the present invention, is a plan view of a roving production apparatus.

FIG. 3 is a side view showing a part of the draft device of the present invention.

FIG. 4 is an enlarged sectional view of a back roller portion of the draft device of the present invention.

FIG. 5 is a front view of a middle top roller.

FIG. 6 is a partially enlarged view of a roving fiber bundle obtained by the apparatus of the present invention.

FIG. 7 is a partially enlarged view of a yarn spun using a roving fiber bundle obtained by the apparatus of the present invention.

FIG. 8 is an enlarged sectional view taken along AA in FIG. 7;

FIG. 9 is an enlarged sectional view taken along the line BB in FIG. 7;

[Explanation of symbols]

 7, 7 ', 7 "pet guide 8, 8', 8" back bottom roller 9, 9 ', 9 "back top roller 10 middle top roller 14 roving fiber bundle 17, 19, 25, 42 roller shaft 18, 20 , 32,33 Timing pulley 21,22 Timing belt 23 Focusing guide 24 Top apron 25 Bottom apron 26,27,28 Motor 29,30,31 Fiber bundle 34,35,36 Bearing 37,38 Oiles metal 39 Key material

Claims (3)

[Claims] 1. A roving machine (roving machine, bobiner, row bar) equipped with a roller type draft device, comprising three coaxial back bottom rollers and back top rollers which rotate independently, and three bags. The bottom roller drive motor can control speed change and stop individually.
Draft device capable of arbitrarily changing the draft magnification of the three systems. 2. A draft device according to claim 1, further comprising a guide for focusing three types of slivers between a back bottom roller and a middle bottom roller, wherein the guide can be moved up and down. 3. The drafting device according to claim 1, wherein the middle top roller has a roller shape having a hollow structure when the drafting device is a double apron system.