Expander roll
AssigneeYamauchi Corporation
InventorsKazuhiro Katsuhara, Yoshinobu Nakamura, Isao Origuchi
Life of this patent
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Abstract
An expander roll that has a plurality of metallic, cylindrical roll members is constructed to obtain sufficient liquidtightness, wherein a gap-facing concave portion 19 is formed in the outer circumferential surface of a ring-shaped elastic packing 17 with which a gap 18 between adjoining, cylindrical roll members 6A and 6B is closed, in addition, a required number of concave portions 21 are formed in both side parts of the gap-facing concave portion 19 so as to form pleat-like portions 22 and the outer circumferential surface of the pleat-like portion 22 is fixed to the inner circumferential surfaces of the cylindrical roll members 6A and 6B on the same side as the side of the outer circumferential surface of the pleat-like portion 22.
Claims8
An expander roll comprising:
- a plurality of metallic, cylindrical roll members attached to an outer periphery of a curved shaft with bearings;
- and
- a ring-shaped elastic packing with which a gap between ends of adjoining, cylindrical roll members is closed, the packing provided inside the ends of the roll members and having an outer circumferential surface that faces the gap between the roll members which said outer circumferential surface has respective side parts on either side of the gap;
- wherein outer surfaces of both side parts are fixed to inner surfaces of the cylindrical roll members, and the ring-shaped elastic packing is deformed in accordance with a movement in a lengthwise direction of the adjoining, cylindrical roll members;
- and
- wherein one concave portion or a plurality of concave portions are formed in the outer surfaces of both side parts so that both side parts have pleat-like portions, and outer surfaces of the pleat-like portions and the inner surfaces of both cylindrical roll members are fixed, whereby the pleat-like portions are deformed in accordance with the movement of the cylindrical roll members in the lengthwise direction.
An expander roll comprising:
- a plurality of metallic, cylindrical roll members attached to an outer periphery of a curved shaft with bearings;
- and
- a ring-shaped elastic packing with which a gap between ends of adjoining, cylindrical roll members is closed, the packing provided inside the ends of the roll members;
- wherein outer surfaces of both side parts of a part of an outer circumferential surface of the ring-shaped elastic packing that faces the gap between the roll members are fixed to inner surfaces of the cylindrical roll members, and the ring-shaped elastic packing is deformed in accordance with a movement in a lengthwise direction of the adjoining, cylindrical roll members;
- and
- wherein a similarly ring-shaped flange is provided at each end of the ring-shaped elastic packing;
- an edge of a sleeve extending in the lengthwise direction of the curved shaft is attached to an inner periphery of each flange;
- a closed-cell foamed ring is formed to be adjacent to both the flanges;
- a cylindrical spacer and a cleat are provided on a side opposite to the flange in the foamed ring;
- and the cylindrical spacer and the flange are bonded to both side faces of the foamed ring with a sealing and bonding agent.
Dependencies are inferred from the claim text.