JPS63769Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to an improvement of a spindle for a spinning machine such as a spinning frame, and it is possible to reduce the power required to drive the spindle, securely and firmly fix the bolster, and prevent the intrusion of fluff into the bearing section. The object of the present invention is to provide a spindle for a spinning machine that can prevent the above-mentioned problems. As an energy saving measure for spinning machines such as spinning machines, a method has been proposed in which the diameter of the spindle warb is reduced, the rotation speed of a spindle rotation drive unit such as a chin roller is lowered, and the power used is reduced. However, in the conventional ordinary spindle, the blade B of the spindle A is supported by the insert neck bearing D at the upper end of the center sleeve C, and the warp E of the spindle A is attached to the outer peripheral area of the bearing D, as shown in FIG. The structure is such that the center line position of the spindle tape F, which is arranged and passed around the warb E, is within a range of ±10 mm in the vertical direction with respect to the plane passing through the center of the rollers G of the insert neck bearing D. It is something that exists. Means for reducing the diameter of the warb E in the spindle A having the structure described above include means for reducing the outer diameter of the blade B, means for reducing the outer diameter of the rollers G of the insert neck bearing D, and means for reducing the outer diameter of the rollers G of the insert neck bearing D. Three methods have been adopted: reducing the wall thickness of the outer race H of the bearing D; however, each method has its limitations in ensuring smooth rotation of the spindle A; Due to the fact that a certain gap is required between the outer circumferential surface of case I that holds the outer race H of the insert neck bearing D, and so on, the outer diameter of the warb E is limited to approximately 18.5 mm. .
Furthermore, as the spindle rotates at high speeds, nuts for fixing the bolster tend to become loose and lint tends to enter the bearing portion. As described in the claims of the utility model registration, the present invention has a configuration in which the upper end surface of the insert neck bearing is located below the inner lower surface of the lower flange of the warb, so that the outer diameter of the insert neck bearing Regardless, it is possible to reduce the diameter of the worm, thereby reducing the rotational speed of the spindle rotation drive part and saving drive power, or to enable high speed rotation of the spindle with the same drive power, and to use the bolster. The bearing is securely and firmly fixed, does not loosen even when the spindle rotates at high speed, and can effectively prevent fluff from entering the bearing part. The configuration of the present invention will be explained below with reference to the embodiment shown in FIG. In FIG. 1, the insert neck bearing 6 is in contact with the bolster seat 5 which abuts on the upper surface of the spindle rail 1 via the taper washer 16 of the bolster 4 which is fixed to the spindle rail 1 by a spherical washer 2 and a spherical nut 3. In the warb 9 fitted and fixed to the blade 8 of the spindle 7, only the skirt portion 11 hanging down from the outer peripheral edge of the lower collar portion 10 surrounds the insert neck bearing 6 from above, The upper end surface 12 of the insert neck bearing 6 is located below the inner lower surface 13 of the lower collar portion 10 of the warb 9. As a result, the inner and outer diameters of the warb 9 can be made close to the outer diameter of the blade 8, and the outer diameter of the warb 9 is usually about 14 mm, and in some cases about 10 mm.
The diameter can be as small as about mm. According to the above structure, the warb 9 is located above the insert neck bearing 6, and under the influence of the tension weight of the spindle table 14 applied thereto, the spindle 7 tends to tilt in the tension direction and rotate while tilted. Bolster 4
The inner diameter of the tapered washer 16 is made small within a range that does not adversely affect the spindle rotational amplitude, and the taper washer 16 is installed.
By using the spherical washer 2 and the spherical nut 3,
By making the right angle accurate when the bolster seat 5 is fixed to the spindle rail 1, it is possible to prevent the spindle 7 from rotating while being tilted. Furthermore, as mentioned above, there is a phenomenon in which the spindle 7 rotates while being tilted, so the rollers of the insert neck bearing 6 receive a tilted load and tend to generate heat and wear. As will be described later, the tension weight requires a low load, the spindle tape with a narrow tape width is used, and the plane passing through the center of the rollers of the insert neck bearing 6 and the spindle table 1
This can be easily prevented by shortening the distance between No. 4 and the center line as shown in FIG. Note that the tendency for fly fluff to enter through the gap between the insert neck bearing 6 and the skirt portion 11 of the warb 9 can be avoided by providing a stepped portion 15, which is an enlarged diameter portion, at the lower part of the inner peripheral surface of the skirt portion 11. This is prevented by preventing the rise in The present invention has the configuration described above, and has 9
The outer diameter of the spindle can be made significantly smaller than the warb of a conventional spindle, so in order to achieve the same rotation speed as the spindle of a conventional device, the rotation speed of the spindle rotation drive unit such as a chin roller can be lowered.
If the rotational speed of the drive unit is the same, the spindle can be rotated at a higher speed, and the spindle driving power can be reduced. Currently, we have a spindle with a 14mm worm diameter according to the present invention, a conventional worm diameter 20.8mm, and a worm diameter 18.5mm spindle.
The spindle speed is 16000R.PM using a spinning machine of the same standard.
When the power consumption of a spindle with a warb diameter of 20.8 mm was set as 100 and compared with the power consumption of other spindles, the results shown in Table 1 were obtained. 1st
As is clear from the table, in the case of a bare spindle, the spindle with a warb diameter of 14 mm according to the present invention has
Compared to a spindle with a weave diameter of 20.8 mm, the power consumption is
It is only 57%, and among spindles with fully threaded yarns, the spindle with a weave diameter of 14 mm according to the present invention has a
It is clear that approximately 70% of the warb diameter is sufficient compared to a spindle with a 20.8 mm warb diameter.

[Table] The conditions and the state of each part when the above-mentioned spindles were operated continuously for 24 hours are as shown in Table 2. The spindle with a diameter of 14 mm according to the present invention showed no abnormalities compared to the conventional spindle.

[Table] The spindle for a spinning machine according to the present invention has the configuration and operation described above, and the spindle warp is made small in diameter without causing any effect on the function as a spindle, and the spindle can be used for driving the spindle. This has the effect of reducing power consumption. In addition, in this invention, the bolster seat is fixed to the spindle rail using a taper washer, a spherical washer, and a spherical nut, so the distance between the center line of the spindle table and the plane passing through the roller center of the insert neck bearing is large. Even when I get old,
The perpendicularity between the spindle and the spindle rail is ensured and maintained, and the flat surface of the spherical washer is always firmly in contact with the back of the spindle rail when screwed with the spherical nut, allowing high-speed rotation of the spindle. This prevents the fixation of the bolster seat from loosening, and has the effect of maintaining the firm fixation of the bolster seat. It also hangs down from the outer periphery of the spindle warp,
The skirt part that surrounds the insert neck bearing from above has a step part, which is an enlarged diameter part, formed at the lower part of the inner peripheral surface.
The fly fluff that has entered the skirt section is rotated at high speed in the enlarged diameter section, is pressed against the inner peripheral surface of the skirt section by centrifugal force, and is discharged from the lower edge, which also has the effect of preventing fly fluff from rising into the bearing section. There is.

[Brief explanation of the drawing]

FIG. 1 is a half-cut longitudinal sectional view of one embodiment, and FIG. 2 is a longitudinal sectional view showing only the main parts of a conventional spindle. 4: Bolster, 6: Insert neck bearing, 7: Spindle, 9: Warb, 10: Lower flange, 11: Skirt, 12: Upper end surface, 13: Inner lower surface, 15... Step portion which is the enlarged diameter portion.

Claims (1)

[Scope of utility model registration request] The upper end surface of the insert neck bearing on the bolster side is located below the inner lower surface of the lower flange of the spindle warp, and the skirt that hangs down from the outer periphery of the lower flange surrounds the insert neck bearing from above. A spindle for a spinning machine, in which a stepped portion serving as an enlarged diameter portion is formed at the lower part of the inner peripheral surface of the skirt portion, and the bolster seat is fixed to the spindle rail by a tapered washer, a spherical washer, and a spherical nut.