JP2512643Y2 - Top roller - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a top roller which reduces resistance due to the revolution of a roller and reduces heat generation.

[0002]

2. Description of the Related Art As a top roller of this type, the present applicant has proposed one shown in FIG. 2 (see Japanese Patent Application No. 2-83034).

In FIG. 2, a bottom roller (not shown)
The thrust plate 3 is mounted on both end surfaces of the arbor 1 (where the shape on both sides of the arbor 1 is the same, so only one side of the arbor 1 will be described) on which hard rubber is mounted to clamp the yarn between The ball 4 is disposed in contact with the recess 3a of the thrust plate, and the ball 4 is configured to contact with the thrust plate 6 provided inside the bush 5. Further, the bush 5 is provided with the air vent 5a. ing.

[0004]

According to the present invention, a thrust receiving means composed of a thrust washer and a ball is provided on both end surfaces of an arbor fitted with rubber, and the bearing means is attached to the rotating part of the arbor. In the top roller equipped with the end bush through the bearing means,
Two wide slats mounted on the inner surface of the end bush
Intermediate with wide spacing between the washer and arbor
Between the collar and the thrust washer and the intermediate collar,
Direct contact between the inner surface of the arbor and the outer surface of the end bush
Two rows of narrow width that are touched and each supported by a retainer
A large-diameter roller and a position facing the protrusion of the arbor
Long projection parallel to the arbor from the support attached to the
Those bearing ring whether <br/> Ranaru having a bearing portion provided with a projection on the end and.

Further, a washer 13 is mounted between the stop ring 11 and the step portion 8a of the end bush 8, and a thrust washer 14 is mounted inside the washer 13.

A thrust washer 15 is mounted around the thrust plate 3, and the thrust washers 14 and 15 are attached.
A retainer 16 is mounted between the rollers, and the retainer 16 supports a large number of rollers 17 having a short length and a large diameter in three rows.

In the top roller thus constructed,
Since the roller 24 having a large diameter and a short length is attached to the rotating portion 1a of the arbor 1, the space between the rollers 17 in each row is widened, and a large amount of lubricating oil can be held, so that the arbor 1 can be held.
Even if the roller is rotated at high speed, the heat generated in the roller 17 is absorbed by the lubricating oil, and the temperature rise can be prevented.

Further, since the protrusion 1b and the inner end of the seal ring 7 do not come into contact with each other, heat is not generated even when the arbor 1 is rotated at a high speed, and the distance between the protrusion 1b and the inner end of the seal ring 7 is small. Since it is a minute interval, even if the lubricating oil such as grease is melted and flows, it does not flow out from between the protrusion seal rings 7 due to the surface tension.

[0009]

However, in this top roller, the retainer 1 that holds the three rows of rollers 17 is used.
Since there is one 6, the rotation of the retainer 16 and the rotation of the roller 17 are different, and there is a problem that friction is generated due to the difference in the rotation and heat is generated.

Further, the thin retainer 16 alone is used for the roller 17
However, there is a problem that the roller 17 is skewed due to the skew and frictional heat is generated.

[0011]

According to the present invention, a thrust receiving means composed of a thrust washer and a ball is provided on both end surfaces of an arbor fitted with rubber, and the bearing means is attached to the rotating part of the arbor. In the top roller having the end bushes mounted thereto, the bearing means mounts two thrust washers and an intermediate collar on the inner surface of the end bushes, and a large retainer supported in a row between the thrust washers and the intermediate collars. Two rows of diameter rollers are mounted, and a bearing ring is mounted at a position opposite to the protruding portion of the arbor.

[0012]

In the present invention, the retainers are independent for each row of rollers, and the retainers are provided with play in the thrust direction, so that each retainer can freely rotate and the resistance due to the revolution of the rollers is reduced. Fever can be reduced.

Further, by sandwiching a roller having a short length, a large diameter, and a crown with a thrust washer and an intermediate collar, it is possible to prevent the roller from slipping due to skew and to prevent heat generation.

Further, by making the inner surface of the end bush directly the rolling surface of the roller, the number of rotations of the roller is reduced, the grease pocket is widened, and the grease replenishing cycle is extended.

[0015]

1 is a partial sectional view of a top roller of one embodiment of the present invention, in which 1 is an arbor, 1a is a rotating part, 1b is a protruding part, 2 is hard rubber, 3 is a thrust plate, and 4 is a thrust plate. The balls 5, 5 are bushes, 6 is a thrust plate, 8 is an end bush, and 8a is a stepped portion. The constructions of these are the same as those in the above-mentioned conventional example, and the description thereof will be omitted. Opposed to the protruding portion 1b of the arbor 1 between the step portion 8a and the stop ring 19 provided in the groove 18.
The support portion 20a of the bearing ring 20 is mounted so that
The bearing portion 20b of the bearing ring 20 is parallel to the arbor 1.
And a protrusion 20c is formed at the tip.

A groove 21 is provided near the step portion 8a, and a stop ring 22 is attached to the groove 21. Between the stop ring 22 and the step portion 8b of the end bush 8 near the thrust plate 3. Thrust washer 2
3,24 and wide spacing between the A over bar therebetween
Attach the intermediate collar 25 provided and thrust washer 2
The diameter is large between 3, 24 and the intermediate collar 25,
A plurality of rollers 26 each having a crown with a short overall length are supported by two rows of retainers 27 and 28, respectively.

In the top roller of this embodiment having such a structure, since the roller 26 has a short overall length, a large roller diameter, and a crown, the roller 26 is prevented from slipping due to skew and heat generation is kept low. Therefore, the temperature is kept low.

Further, the rollers 26 in each row are made into retainers 27, 28 in a single row, so that each retainer 27, 2
8 can rotate freely, and therefore the roller 26 and the retainer 2
It is possible to prevent interference with the rollers 7, 28, reduce friction between the roller 26 and the retainers 27, 28, and prevent heat generation.

Further, since the inner surface of the end bush 8 is directly used as the rolling surface of the roller, the number of rotations of the roller 26 is reduced, heat generation is reduced, and a wide space is provided between the arbor 1.
The provision of the intermediate collar 25 widens the grease pocket and extends the grease replenishment period.

Further, by adopting a structure in which the thrust force of the roller 26 is received by the end faces of the thrust washers 23, 24 and the intermediate collar 25, the retainers 27, 28 do not receive the thrust force of the roller 26, and the retainers 27, 28 can freely move. Since the roller 26 and the retainers 27 and 28 are rotated, the heat generation can be prevented.

Further, the bearing ring 20 is attached to the arbor 1.
Since it is provided so as to face the projecting portion 1b, a non-contact type seal is formed between the projecting portion 1b of the arbor 1 and the bearing ring 20 extends parallel to the arbor 1 and projects at the tip.
By providing the support portion 20b provided with the raising 20c,
The support portion of the support ring 20 prevents the end bushes 8 from falling off, and prevents invasion of the cotton wool.

[0022]

As described above, in the top roller of the present invention, since the roller is mounted between the thrust washer and the intermediate collar, the retainer does not receive the thrust force of the roller and is flexible. There is no friction between
It does not generate heat, and the overall length of the roller is short, the diameter of the roller is large, and it has a crown, so it is possible to prevent slippage due to skew of the roller and prevent heat generation. By using a direct rolling surface, the number of rotations of the roller decreases, and a wide space is provided between the roller and the arbor.
The provision of the intermediate collar has an advantage that the grease pocket is widened and the supply of grease is extended.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a top roller according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a conventional top roller.

[Explanation of symbols]

 1 Arbor 2 Hard Rubber 3, 6 Thrust Plate 4 Ball 5 Bush 7 End Bush 18, 21 Groove 19 Stop Ring 20 Support Ring 22 Stop Ring 23, 24 Thrust Washer 25 Intermediate Collar 26 Roller 27, 28 Retainer

Claims (1)

(57) [Scope of utility model registration request] 1. A top in which thrust receiving means composed of thrust washers and balls are provided on both end surfaces of an arbor fitted with rubber, bearing means is mounted on a rotating portion of the arbor, and end bushes are fitted through the bearing means. In the roller, the bearing means is provided on the inner surface of the end bush.
Two wide mounted thrust washers and arbor
And an intermediate collar with a wide gap between the thrust collar and the thrust collar.
The inner surface of the arbor and the
Make direct contact with the outer surface of the end bush and use a retainer to
Two rows of large diameter rollers with narrow widths supported respectively
From the support part installed at the position facing the protruding part of the bar
Long protrusions parallel to the arbor and projections on the ends
A top roller comprising a support ring having a support portion .