JPH1017190A - Support device of belt-like sheet guide roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cope with thermal expansion of a guide roller by providing a bracket which slidably holds a slide body through a ball or a roller on a guide surface of a rail fixed in parallel to a central shaft in a play side housing and to which the slide body is fixed and is also fixedly arranged in a necessary position. SOLUTION: A slide body 9 is fixed to a bracket 11, and the bracket 11 is fixedly arranged on a machine frame 5. Therefore, when a guide roller 1 is heated by a burner 2 and is thermally expanded, a rolling bearing 4 is pushed by a central shaft 1b, and can be moved in the lengthwise direction of the central shaft 1b together with a housing 7. When a processing device is operated, the guide roller 1 rotates in a condition where a belt-like sheet S is wound round its outer periphery, and the belt-like sheet S passing through its outer periphery can be processed by the burner 2. When it extends in the lengthwise direction by thermally expanding by heat of the burner 2, a rail 8 slides to the slide body 9, and large thrust force is prevented from being generated in the rolling bearings 3 and 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supporting a guide roller for guiding a belt-like sheet such as a plastic film or paper, and more particularly, to a guide roller which is affected by heat generated in a frame process or a corona process. For those who support.

[0002]

2. Description of the Related Art In frame processing, the surface of a belt-like sheet passing over a guide roller is oxidized using a burner, so that the guide roller is heated. Also, in the corona treatment, the guide roller of the belt-shaped sheet becomes a dielectric and is heated by heat accompanying corona discharge. Therefore, in the conventional guide roller support device, as shown in FIG.
An outer ring 4a of the rolling bearing 4 attached to one of the center shafts 1a and 1b is supported by being fitted slidably in the longitudinal direction of the center shaft 1b to an inner peripheral portion of a housing 7 fixed to the machine frame 5. is there.

[0003]

However, in the above-described supporting device, the rolling bearing mounted on the central shaft is affected by the heat generated by the surface treatment of the belt-shaped sheet, and its outer ring is moved in the central axial direction in the housing. And the rolling bearing generates a large thrust force, resulting in a problem that the life is extremely shortened.

[0004]

Therefore, according to the present invention, a rail is fixed to a play-side housing holding an outer ring of a rolling bearing attached to a center shaft of a guide roller in parallel with the center shaft, and a guide surface of the rail is provided. The slide body was slidably held via a ball or a roller, and the slide body was fixed to a bracket fixed at a required position. Therefore, the coefficient of friction between the rail and the slide body is small, and the guide surface of the rail is located at a position away from the center axis of the guide roller, and is less affected by heat than the conventional mating surface of the outer ring of a rolling bearing and the housing. Because it is hard to receive, you can always slide with small force. When the guide roller expands in the longitudinal direction due to thermal expansion, the rail slides with respect to the slide body, so that the play-side housing moves to absorb the extension of the guide roller, and the thrust force applied to the rolling bearing increases. To prevent

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A support device for a belt-shaped sheet guide roller according to the present invention is a support device for a belt-shaped sheet guide roller which is affected by heat generated during processing of a belt-shaped sheet. A play-side housing for holding an outer ring of a rolling bearing attached to one side, a rail fixed to the play-side housing in parallel with the central axis, and a slide slidably held on a guide surface of the rail via a ball or a roller. And a bracket to which the slide body is fixed and which is fixed at a required position. Further, the rail may be replaced with the slide body, the rail may be fixed to the bracket, and the slide body may be fixed to the housing.

[0006]

An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the guide roller 1 in this embodiment is applied to a frame processing device for oxidizing the surface of the belt-shaped sheet S with the flame coming out of the burner 2, and guides the belt-shaped sheet S around its outer periphery. I do. Rolling bearings 3 and 4 are attached to the center shafts 1a and 1b at both ends thereof, and the outer ring 3a of one of the bearings 3 is held and held in a longitudinal direction of the center shaft by a housing 6 fixed to a machine frame 5. The outer ring 4b of the other bearing 4 is held by the play side housing 7.

A rail 8 is fixed to the play-side housing 7 in parallel with the central axis 1b, and as shown in FIG.
The slide body 9 is slidably held with a low coefficient of friction in the longitudinal direction through a large number of balls 10 on the groove-shaped guide surface so as to be able to withstand vertical, horizontal, and vertical loads, and as shown in FIG. Is fixed to the bracket 11, and the bracket 11 is fixed to the machine frame 5. Therefore, when the guide roller 1 is heated by the burner 2 and thermally expanded, the rolling bearing 4 is pushed by the center shaft 1b and can move together with the housing 7 in the longitudinal direction of the center shaft 1b. In addition,
In this embodiment, the rail 8, the slide body 9 and the ball 10
Is commercially available (for example, THK)
LM Guide).

During operation of the processing apparatus, the guide roller 1 rotates with the belt-shaped sheet S wound around its outer periphery, so that the belt-shaped sheet S passing through the outer periphery can be processed by the burner 2. Then, when it is thermally expanded by the heat of the burner 2 and extends in the longitudinal direction, the rail 8 is moved to the slide body 9.
To prevent the rolling bearings 3 and 4 from generating a large thrust force.

According to the present invention, as shown in FIG. 3, the slide body 9 is fixed to the play side housing 7, and the rail 8 is fixed to the bracket 11 fixed to the machine frame in parallel with the center axis 1b. The slide body 9 may be slidable on the guide surface 8 via the ball 10. Further, a roller may be used instead of the ball 10.

[0010]

According to the present invention, even if the guide roller is thermally expanded, the housing slides with a small force, so that a large thrust force does not act on the rolling bearing, and the life of the rolling bearing is greatly extended as compared with the prior art. . And large maintenance costs can be saved. Further, since the housing and the bearing outer ring do not have to slide with each other during rotation, the processing accuracy of the fitting surface of the housing with the bearing outer ring is sufficient with normal accuracy. Therefore, the processing of the housing is facilitated, and even if the guide roller is very long, for example, 8 meters or 9 meters in length, a supporting device that can cope with the thermal expansion can be easily obtained.

[Brief description of the drawings]

FIG. 1 is a front view showing a cross section of a support device for a belt-shaped sheet guide roller according to an embodiment of the present invention.

FIG. 2 is a side view of the support device for the belt-shaped sheet guide roller shown in FIG.

FIG. 3 is a side view of a supporting device for a belt-shaped sheet guide roller according to another embodiment of the present invention.

FIG. 4 is a front view showing a cross section of a conventional belt-shaped sheet guide roller support device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide roller 4 Rolling bearing 7 Play side housing 8 Rail 9 Slide body 10 Ball 11 Bracket

Claims (2)

[Claims] 1. A play-side housing for holding an outer race of a rolling bearing attached to one of central shafts protruding from both end surfaces of a guide roller in a support device of a belt-like sheet guide roller affected by heat generated by processing of the belt-like sheet. A rail fixed to the play-side housing in parallel with the central axis, a slide body slidably held on a guide surface of the rail via a ball or a roller, and the slide body is fixed to a required position. A support device for a belt-shaped sheet guide roller, comprising a fixed bracket. 2. The belt-like sheet guide roller supporting device according to claim 1, wherein the rail and the slide body are exchanged, the rail is fixed to the bracket, and the slide body is fixed to the play side housing.