JPH0694040A - Bearing holding structure - Google Patents

Abstract

PURPOSE:To simplify mounting and demounting a bearing by installing a member pressing a bearing outer ring inward, in an inner edge at the opening side of a bearing housing. CONSTITUTION:A bearing 11 is composed of an outer ring 11a, an inner ring 11b and a ball 11c, and the outer ring 11a is held on a sectional V-shaped bearing housing 12, thereby assembling the bearing 11. Two pressing members 15 are formed in an opening inner edge of this housing 12, and the assembled outer ring 11a is constituted so as to be pressed inward. These pressing members 15, 15 are composed of a cylindrical body 15a being screwed in the bearing housing 12, a ball 16 being installed in the cylindrical body 15a and coming into contact with the outer ring 11a and a spring 17 energizing this ball 16 to the outer ring 11a side and simultaneously preventing the cylindrical body 15a from slipping off through a slipoff preventing bolt 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing holding structure including a bearing and a bearing housing that holds the bearing.

[0002]

2. Description of the Related Art Generally, many guide rolls for guiding a web are used in a printing machine. After using these guide rolls for a predetermined time, they are replaced with new guide rolls. The guide roll has a rotating shaft, which is rotatably supported by a bearing held by a bearing housing.

Since the guide roll is frequently used, it has been replaced frequently.

[0004]

As mentioned above, the guide rolls are frequently replaced. This replacement work is performed by removing the bearing supporting the rotating shaft of the guide roll from the bearing housing. However, since the bearing housing holds the bearing firmly, it is not easy to attach and detach the bearing.

The present invention has been made in view of the above points, and provides a bearing holding structure in which a bearing for supporting a rotating shaft of a guide roll can be easily and easily attached to and removed from a bearing housing. With the goal.

[0006]

SUMMARY OF THE INVENTION The present invention comprises a bearing having an outer ring and a bearing housing having a U-shaped cross section for holding the outer ring from the outside. The bearing holding structure is characterized in that a pressing member for pressing in one direction is provided.

[0007]

The bearing is housed in the bearing housing from the opening side, and the outer ring of the bearing is pressed by the pressing member to lock the bearing in the bearing housing.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing an embodiment of a bearing holding structure according to the present invention.

First, an outline of the bearing holding structure will be described with reference to FIGS. 2 and 3. In FIG. 2, the printing press guide roll 21 has a rotary shaft 19, and the rotary shaft 19 is rotatably supported by a pair of bearings 11, 11.

As shown in FIG. 3, each bearing 11 has an outer outer ring 11a, an inner inner ring 11b, an outer ring 11a and an inner ring 1.
The outer ring 11 a is held by the housing case 12.

Further, the pair of housing cases 12 and 12
Is formed at the tip of a pair of columns 22, 22 extending horizontally from the pair of frames 23, 23. Further, of the pair of housing cases 12, 12, the inner peripheral surface of the housing case 12 on the right side in FIG. 2 is smooth,
The outer ring 11a is provided on the inner peripheral surface of the left housing case 12.
A recess 25 into which is inserted is formed in the circumferential direction. By thus fitting the outer ring 10a into the recess 25,
The bearing 11 can be positioned at a predetermined position in the left housing case 12. At the same time, if the guide roll 21 is heated and expands in the axial direction during operation, the thermal expansion of the guide roll 21 can be released by sliding the bearing in the right housing case 12.

Next, the bearing housing 12 will be described in detail with reference to FIG. As shown in FIG. 1, the guide roll 21
A web 20 is wound around the outer periphery of the guide roll 2
1 is pressed in the T direction in FIG. The bearing housing 12 has a U-shaped cross section, and the bearing housing 12 is in contact with the outer ring 11 a of the bearing 11 within a range of approximately 180 °. Further, the opening of the bearing housing 12 is slightly upward with respect to the horizontal direction (H direction) so that the bearing 11 is not easily separated from the bearing housing 12. In FIG. 1, the direction of gravity is indicated by G.

Further, as shown in FIG. 1, pressing members 15, 15 for pressing the outer ring 11a of the bearing 11 inward are provided on the inner edge of the bearing housing 12 on the opening side. Each pressing member 15 is a cylindrical main body 15a screwed into the bearing housing 12, a ball 16 provided inside the cylindrical main body 15a, which abuts the outer ring 11a of the bearing 11, and a ball 16
And a spring 17 for urging the outer ring 11a toward the outer ring 11a. Further, the cylindrical main body 1 is provided on the outer periphery of the cylindrical main body 15a.
A retaining bolt 18 for preventing the removal of 5a is screwed. In addition, each ball 16 of the pair of pressing members 15 and 15
Are slightly displaced from the center of the rotary shaft 19 toward the opening side of the bearing housing 12 (right side in FIG. 1).
The bearing 11 is locked by pressing the outer ring 11a with 6,6.

Next, in the bearing holding structure having such a structure, when the guide roll 21 is replaced, the rotary shaft 19 of the guide roll and the bearing 11 are removed from the bearing housing 12. In this case, the rotary shaft 19 and the bearing 11
To the right in FIG. At this time, the outer ring 1 of the bearing 11
1a resists the force of the springs 17, 17 and the ball 1
6 and 16 are pulled outward in the radial direction, and then the bearing 11 is removed from the opening side of the bearing housing 12.

When the bearing 11 is removed from the bearing housing 12, the balls 16 and 16 are attached to the spring 1.
Biased inwardly by 7, 17 but balls 16, 1
Since 6 is held by the inner end (radially inward end) of the cylindrical main body 15a, it does not fall.

Next, a new guide roll 21 in which the bearing 11 is attached to the rotary shaft 19 in advance is prepared, and the rotary shaft 19 and the bearing 11 are arranged from the right side of FIG.
It is stored in 2.

In this case, the outer ring 11a of the bearing 11 resists the force of the springs 17, 17 and pulls the balls 16, 16 outward in the radial direction. Next, the bearing 11 is the bearing housing 1
At a predetermined position in 2, the balls 16 and 16 press the outer ring 11a to lock the bearing 11, and thus the bearing 11a is removed in the bearing housing 12.

As shown in FIG. 2, axial positioning is performed by fitting the left bearing 11 into the recess 25 in the left bearing housing 12.

As described above, according to this embodiment, the bearing 11 that supports the rotary shaft 19 can be easily and easily attached to and removed from the bearing housing 12 with one touch.

[0020]

As described above, according to the present invention, the bearing can be easily and easily attached to and removed from the bearing housing with one touch.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a bearing holding structure according to the present invention.

FIG. 2 is a front view showing the entire bearing holding structure.

FIG. 3 is an enlarged view of part A of FIG.

[Explanation of symbols]

 11 bearing 11a outer ring 12 bearing housing 15 pressing member 16 ball 17 spring 19 rotating shaft 21 guide roll

Claims (2)

[Claims] 1. A bearing having an outer ring, and a bearing housing having a U-shaped cross section for holding the outer ring from the outside. A pressing member for pressing the outer ring inward is provided at an inner edge of an opening side of the bearing housing. A bearing holding structure characterized in that 2. The bearing holding structure according to claim 1, wherein the pressing member has a ball that comes into contact with the outer ring and a spring that urges the ball toward the outer ring.