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Bendable Cylinder

a cylinder and cylinder body technology, applied in the field of bendable cylinders, can solve the problems of occupying a relatively affecting the stability of the cylinder, and requiring a large space at the side of the cylinder jacket, etc., and achieves the effect of implementing the suspension with bearings between the spindle and the cylinder jacket, and is complicated and difficult especially in the installation field

Inactive Publication Date: 2007-12-20
UUSITAL PASI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention aims to overcome the shortcomings of previous designs by introducing a new type of composite cylinder construction. This construction features a protective sleeve that holds both bearings, resulting in a compact and easy-to-mount bending system. The technical effects of this invention include improved efficiency, reduced weight, and simplified installation."

Problems solved by technology

A drawback with the solution according to this specification is relatively complicated structure and installation.
In addition, it takes up a relatively large space at the side of the cylinder jacket.
Moreover, in prior-art solutions, implementing the suspension with bearings between the spindle and the cylinder jacket is a complicated and difficult task especially in respect of installation.

Method used

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  • Bendable Cylinder
  • Bendable Cylinder

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Embodiment Construction

[0011]FIG. 1 presents a cross-sectional side view of an end part of the composite cylinder, which comprises a continues cylinder jacket 1 of composite material and inside it a central shaft 2 going through the cylinder jacket and having a thicker middle portion 21 and thinner end portions 22 (inner) and 23 (outer).

[0012] Between the inner shaft portion 22 and the jacket 1 is a protective sleeve 30 (outer bushing) fitted nearly completely inside the cylinder jacket, said sleeve being fixedly fitted inside and at the end of the cylinder jacket 1. Fitted inside the protective sleeve 30 at either end of it are bearings 31 and 32 and inside these a bushing or ferrule 33 (inner bushing) fitted nearly completely inside the cylinder jacket. In addition, the cylinder is provided with a bending mechanism arranged in the bushing 33 for bending the bushing 33 and the cylinder jacket 1 and for adjusting the bending action. To this purpose the outer end of the bushing 33 is provided with an adju...

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PUM

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Abstract

A bendable cylinder (1, 2), especially a spreader for spreading a web-like material, said cylinder comprising a continues tubular cylinder jacket (1) of composite material and a fixed shaft part (2) on which the cylinder jacket is rotatably mounted with at least two bearings (31, 32) at either end, and said cylinder additionally comprising a bending mechanism provided at either end of the cylinder jacket and comprising an adjusting part (5), such as an adjusting screw, for bending the cylinder jacket, which cylinder has an inner bushing part (33) fitted at least partially inside the cylinder at either end of it, the bending mechanism being fitted in said bushing part, so that, to bend and adjust the cylinder jacket (1), the angular position between a shaft portion (22) and the bushing part (33) is changed, and the bearings (31, 32) at either end are fitted between the inner bushing part (3) and an outer bushing part (30) fixedly arranged inside the cylinder jacket, and the inner and outer bushing parts, the bending mechanism and the bearings form a module (3) that can be mounted as a single unit.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a bendable cylinder, especially a spreader for the spreading of a web-like material, said cylinder comprising a continues tube-like cylinder jacket of composite material and a fixed axle part on which the cylinder jacket is mounted with bearings, and which cylinder additionally comprises a bending mechanism for bending the cylinder jacket. [0002] Bendable composite cylinders with a jacket of composite material are used especially as spreaders in paper and cardboard machines. A composite cylinder has advantageous material properties, in particular coefficient of elasticity and density, and thus it can be so dimensioned as to make it relatively easily bendable to a desired curvature. PRIOR ART [0003] Specification FI-B-103 071 discloses a bendable cylinder for web-like material, comprising a tube-like cylinder jacket of composite material and fixed, i.e. non-rotating spindles attached to either end of the cylinder jacket. ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65H27/00B65H23/025D21F1/40D21GF16C13/00
CPCB65H23/0258B65H27/00F16C13/024B65H2404/172D21F1/40B65H2404/1371
Inventor UUSITALO, PASIMANTOVAARA, TUOMO
Owner UUSITAL PASI