JPH0657891B2 - Spinning machine drafting equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drafting device of a spinning machine for doubling a sliver and drafting a roller in a spinning machine such as a drawing machine, a lap former and a comber.

2. Description of the Related Art As shown in FIG. 3, a conventional drafting device for a spinning machine such as a kneading machine has roller stand metals 3E, 4E provided on corresponding roller stands 1E, 2E.
E rotatably supports a plurality of bottom rollers 5E and a top roller 12E, respectively, and positions the roller portion 5bE of the bottom roller 5E and the roller portion 12bE of the top roller 12E at the central portion between the roller slide metals 3E and 4E.
A rubber pad 18E is in contact with the lower side of the roller portion 5bE of the bottom roller 5E, and a large space B is formed between the roller portion of the top roller, the roller portion of the bottom roller and the rubber pad and the roller slide metal on both sides. Has been formed.

Problems to be Solved by the Invention In the above conventional draft device, a large space is formed between the roller portion of the bottom roller, the roller portion of the top roller, the rubber pad and the roller slide metal on both sides. Therefore, when the spinning speed is increased, the accompanying air current generated around the roller portion of the Bottom roller and the roller portion of the top roller is along the contact portion between the roller portions or between the roller portion and the rubber pad, in front of the contact portion, or Later, a large amount of air flows laterally through a narrow space (hereinafter referred to as a narrowed portion) formed between the outer circumferences of the roller portions or between the outer circumference of the roller pad and the outer periphery of the rubber pad, and a large amount of air flow is blown into the space. As a result, a large amount of fly cotton adheres to the roller shaft (neck part) of the Bottom roller and the roller shaft (neck part) of the top roller, and this fly cotton flies during drafting. There is a problem that the quality of the sliver is deteriorated by being mixed in the powder. Further, as described above, since a large amount of the accompanying airflow flows into the spaces on both sides, the fleece in the draft is disturbed by the airflow flowing into the spaces on both sides, and the quality of the spun sliver is significantly reduced. In particular, since the roller portion of the bottom roller is generally composed of a streak roller having a large number of grooves substantially parallel to the axis on the outer circumference, a large amount of associated airflow is generated around the roller portion, and the associated airflow is generated by both roller portions. It became clear that there was a problem that the fleece was disturbed by a large amount of flow in both sides at the constricted part, which was a major problem in increasing the spinning speed.

Means for Solving the Problems In order to solve the above problems, the present invention provides airflow shielding surfaces inside a roller slide metal so as to face each other,
The roller portion of the bottom roller, the roller portion of the top roller, and the rubber pad are formed to have a length extending over substantially the entire width between the airflow shielding surfaces.

When each bottom roller and top roller of the working draft device are rotated at high speed, the sliver between the roller part of each bottom roller and the roller part of the top roller is transferred, and the sliver is drafted between the roller pair. In this case, a large amount of accompanying airflow is generated around the roller portion of the Bottom roller, but this entrained airflow is generated between the roller portion of the Bottom roller and the roller portion of the top roller, or between the roller portion of the Bottom roller and the rubber pad. Since the narrowed portions of are substantially continuous to the airflow shielding surfaces on both sides, respectively, the narrowed portions are shielded,
The flow of the accompanying airflow in the roller axis direction is blocked, and the turbulence of the fleece due to the accompanying airflow is prevented. Further, since the roller portion of the bottom roller, the roller portion of the top roller and the rubber pad are formed over substantially the entire width between the airflow shielding surfaces, the cotton wool is wound around the roller shaft of the bottom roller and the roller shaft of the top roller. Attachment is blocked.

Embodiments In FIGS. 1 and 2, 1 and 2 are a pair of roller stands of a drafting device in a drawing machine, on which roller slide metals 3 and 4 are attached in the front-back direction (in FIG. 2) by mounting bolts. It is mounted so that its position can be adjusted in the left-right direction. Inside the roller slide metals 3 and 4, in the drawing, airflow shielding surfaces 3a and 4a are formed so as to face each other by the inner surfaces of the roller slide metals 3 and 4, and the dimension between these airflow shielding surfaces is a kneading machine. 120mm to 250mm for the comber and 25 for the wrap former
The width is set to about 0 mm to 350 mm so that the width between the inner surfaces is relatively small. Bottom rollers 5, 6 and 7 are rotatably supported by the roller slide metals 3 and 4, and bearings 8 whose roller shafts 5a, 6a and 7a are fixed to the roller slide metals 3 and 4, respectively. It is rotatably supported by 9. The roller portions 5b, 5b, 7b of the bottom rollers 5, 6, 7 are integral with the roller shafts 5a, 6a, 7a, and as shown in FIG. 1, the air flow shielding surfaces 3a, 4a (roller sliver metal 3,
4), ie, the airflow-shielding surface 3
It is formed to be slightly longer than the dimension between a and 4a, and both ends thereof are rotatably fitted in fitting holes 10 and 11 formed in the airflow shielding surfaces 3a and 4a, respectively. The roller portions 5b, 6b, 7b of the bottom rollers 5, 6, 7 are generally constituted by a striated roller having a large number of grooves on the circumferential surface substantially parallel to the axis, and are rotated counterclockwise in FIG. 2 by a drive mechanism (not shown). It is designed to be rotated. 12,
Reference numerals 13, 14, and 15 denote top rollers that are rotatably supported by the roller slide metals 3 and 4 corresponding to the bottom rollers 5, 6, and 7, and correspond to the corresponding bottom rollers 5, 6, and 7 and draft roller pairs. Are configured. The roller shafts 12a, 13a, 14a, 15a of the top rollers 12, 13, 14, 15 are supported by the roller slide metals 3, 4 so as to be vertically movable, and the spring 1
6 and 17 are pressed (or approached) to the corresponding bot mrollers 5, 6, and 7. The top roller 12,
Roller portions 12b, 13b, 14b of 13, 14, 15;
15b are roller shafts 12a, 13a, 14a, 15a, respectively.
Is rotatably fitted to the bottom rollers 5, 6, and 7 and is driven to rotate by the sliver as the bottom rollers 5, 6, 7 rotate. The roller portions 12b, 13b, 14b, 15b of the top rollers 12, 13, 14, 15 are also the airflow shielding surface 3
It is formed over the entire width between a and 4a, so that between the roller portions 12b, 13b, 14b and 15b and the airflow shielding surfaces 3a and 4a, and between the roller portions 5b, 6b and 7b and the airflow shielding surfaces 3a and 4a. Since there is no space between them, the roller portion 12b,
The narrowed portions between 13b, 14b, 15b and the roller portions 5b, 6b, 7b are substantially continuous with the airflow shielding surfaces 3a, 4a. 18, 19, 20 are bot mrollers 5, 6, 7
A support shaft 1 rotatably supported by roller slide metals 3 and 4 with a rubber pad disposed below
The base portions are fixed to 8a, 19a, 20a, and the tip portions are elastically abutted on the roller portions 5b, 6b, 7b of the Bottom rollers 5, 6, 7 respectively. The rubber pads 18 and 1
The rollers 9 and 20 are formed to have a length that is substantially the entire length of the roller portions 5b, 6b and 7b, that is, a length that is substantially the entire width between the airflow shielding surfaces 3a and 4a.
There is no space between the roller slide metal 3 and 4,
Roller parts 5b, 6b, 7b and rubber pads 18, 19,
The narrowed portion between 20 is substantially continuous with the airflow shielding surfaces 3a, 4a. The rubber pads 18, 19 and 20 are the support shafts 1
8a, 19a, 20a are reciprocally rocked in the front-rear direction by the rocking arm 21, and as is well known, the roller portions 5b, 6b,
It is designed to prevent the fiber from being wrapped around 7b. 22
Is an amens clearer arranged above the top rollers 12, 13, 14, 15 and stretched between the drive roller 23 and the guide roller 24.
It is in contact with the upper side of b, 15b. The width of the amens clearer 22 is set to the roller portions 12b, 13b, 14b, 1
The size is set so as to make contact over substantially the entire length of 5b, and the space between the airflow shielding surfaces 3a and 4a is substantially completely closed above. The above-mentioned Amen Screirah 22 is a drive roller 23.
Is rotated intermittently in the direction of the arrow by the roller portions 12b, 1
The cotton wool adhering to 3b, 14b, 15b is removed, and when necessary, it can be erected upward with the axis of the drive roller 23 as the center. In operation, the draft device A is covered with the cover 25 and is located inside the draft chamber 26. In the drawing, 27 is a bottom pneumatic duct, 28 is a top pneumatic duct, and air is sucked from the suction ports 27a and 28a, respectively. 30 is a feed sliver table, 3
Reference numerals 1 and 32 are calendar rollers.

In the case of the above configuration, when the sliver is doubled and drafted, the plurality of slivers are guided onto the feed sliver table 30 and the roller portions 5b, 6b, 7b of the bottom rollers 5, 6, 7 and the top roller. Roller portions 12b, 13b, 1 of 12, 13, 14, 15
After feeding between 4b and 15b, calender roller 31,
When it is fed between 32 and the drafting work is started, the bottom rollers 5, 6, 7 rotate at a predetermined speed ratio, the rubber pads 18, 19, 20 reciprocate back and forth, and the amen's screeler 22 intermittently rotates. To do. As a result, the sliver has the roller portions 5b and 12b and the roller portions 6b and 13b.
b and between the roller portions 6b and 13b and the roller portions 7b and 14b
It will be drafted in between. In this case, the roller portions 5b and 6
around b, 7b and roller parts 12b, 13b, 14b, 1
An associated airflow is generated around 5b by the rotation of the respective roller portions. In particular, since the roller portions 5b, 6b, 7b are composed of streak rollers, these roller portions 5b, 6
A large amount of accompanying airflow is generated around b and 7b, and the accompanying airflow increases as the spinning speed increases. However, in this embodiment, the roller portions 5b, 6b, 7b and the roller portion 1
2b, 13b, 14b, 15b, rubber pad 18, 1
9, 20 and the amens clearer 22 are formed over substantially the entire width between the airflow shielding surfaces 3a, 4a on both sides, and the roller portion 5
b, 6b, 7b and roller portions 12b, 13b, 14b, 1
5b, roller portions 5b, 6b, 7b and rubber pad 1
Between 8, 19, 20 and roller portions 12b, 13b, 14
Since the narrowed portions between the b and 15b and the amen's screeler 22 are substantially continuous to the airflow shielding surfaces 3a and 4a (inner end surfaces of the roller slide metal 3, respectively), the associated airflow is extruded at the narrowed portions. Also, the associated airflow can be prevented from flowing toward the roller slide metal 3, 4 side, and as a result, the fleece of the sliver can be prevented from being disturbed by the associated airflow. Further, as described above, the lengths of the roller portions 5b, 6b, 7b, etc. are formed over substantially the entire width between the airflow shielding surfaces 3a, 4b, so that the above-mentioned associated airflow is formed by the roller shafts 5a, 6a, 7b.
a, the roller shafts 12a, 13a, 14a, 15a and the support shafts 18a, 19a, 20a are prevented from flowing around each other, so that it is possible to prevent an accident in which cotton wool adheres to the roller shafts 5a, 6a, 7a and the like and winds. Further, during the drafting work, air is sucked from the suction ports 27a, 28a of the bottom pneumatic duct 27 and the top pneumatic duct 28, and an air flow is generated between the roller slide metals 3, 4, but as described above, the roller portion 5b is used. , 6b, 7b, etc. have a length of the airflow shielding surface 3
Since the airflows are formed over substantially the entire width between a and 4a, the airflow between the airflow shielding surfaces 3a and 4a flows uniformly with the entire width between the airflow shielding surfaces 3a and 4a as a pneumatic duct. Disturbance of the fleece in the draft due to the air flow can be reduced and the cleaning effect can be improved. As described above, the fleece can be prevented from being disturbed by the accompanying airflow or the suction airflow, and the roller shafts 5a, 6
Since it is possible to prevent the cotton wool from wrapping around a, 7a, etc., the spinning speed of the sliver can be increased without hindrance (eg 1200 m / mi
n) You can.

In the above embodiment, the airflow shielding surface is formed by the inner end surface of the roller slide metal. However, as shown by the phantom line in FIG. The airflow shielding surface may be formed by the inner surface of the partition plate C.

As described above, according to the present invention, since the roller portion of the bottom roller, the roller portion of the top roller and the rubber pad are formed to have a length extending over substantially the entire width of the airflow shielding surface, the roller portion and the rubber pad can be separated from each other. A space can be eliminated between the both ends of the constricted part and the airflow shielding surface as in the conventional case, so that when drafting the sliver, the accompanying airflow generated around the roller part is left and right roller slide metal in the constricted part. It is possible to prevent the fleece from being disturbed due to the accompanying air flow by preventing the flow to the side and improve the quality of the spun sliver. Further, since it is configured as described above, it is possible to prevent an air flow from flowing around the roller shafts of the bottom roller and the top roller and the support shaft of the rubber pad, and to wind the cotton wool around these roller shafts and the support shaft. Adhesion can be prevented, and as a result, the spinning speed of the sliver can be easily increased.

[Brief description of drawings]

The drawings show the embodiments of the present application. FIG. 1 is a sectional view of a draft device, FIG. 2 is a sectional view, and FIG. 3 is a sectional view showing a conventional device. 1, 2 ...... Roller stand 3, 4 ...... Roller slide metal, 3a, 4a …… Airflow shielding surface 5, 6, 7 …… Bottom roller, 5b, 6b, 7b …… Roller section, 12, 13, 14, 15 ...
… Top rollers, 12b, 13b, 14b, 15b …… Roller part, 1
8, 19, 20 …… Rubber pad

Claims (4)

[Claims] 1. A plurality of bottom rollers and a top roller are rotatably supported by roller slide metals provided on corresponding roller stands, and a rubber pad is brought into contact with the lower side of the roller portions of the bottom rollers. In the draft device of the spinning machine, the airflow shielding surfaces are provided inside the roller slide metal so as to face each other, and the roller portion of the Bottom roller, the roller portion of the top roller, and the rubber pad are substantially the entire width between the airflow shielding surfaces. A drafting device for a spinning machine, characterized in that the drafting device has a length that extends over the entire length. 2. A draft device for a spinning machine according to claim 1, wherein a part of both ends of the roller portion of the bottom roller is made to face a fitting hole formed in the airflow shielding surface. 3. A drafting device for a spinning machine according to claim 1, wherein a drafting device for a drawing machine or a comber is configured such that a dimension between airflow shielding surfaces is set to about 120 mm to about 250 mm. . 4. The draft device for a spinning machine according to claim 1, wherein the draft between the air flow shielding surfaces is set to 250 mm to 300 mm in the lap former draft device.