APPARATUS AND METHOD FOR SLEEVE OR SHEET CORRUGATION

Abstract

An apparatus and method for the forming of corrugations in cylindrical objects or plain sheets, which include but no limited to two or more rotating spline or keyed shafts with internally grooved sliding wheels. Springs or collars with elastic properties are located between sliding wheels to allow them to keep predetermined distance which varies under axial forces.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other objects, features and advantages of the present invention will become apparent from the detailed description of exemplary embodiments of the invention, which follows, when considered in the light of the accompanying drawings, in which:

FIG. 1 is a longitudinal view illustrating rotating shafts with sliding wheels and elastic collars at the start position in accordance with the present invention;

FIG. 2 is a longitudinal view illustrating rotating shafts with sliding wheels and elastic collars at the finish position;

FIG. 3 is a cross-sectional view illustrating the possible third shafts and it location.

FIGS. 4 a, 4 b, and 4c are cross-sectional views illustrating corrugated sleeves with different pitches (4a) or (4b)/and (4c) different depth of corrugations.

Claims

1. An apparatus for corrugating sleeves and/or sheets, said apparatus comprising: at least two rotatable shafts having longitudinal grooves or keys to transfer rotational movementa mechanism to rotate said two shafts;a plurality of wheels adapted to slide in an axial direction with internal grooves or keys located on said shafts; andelastic collars placed between said sliding wheels.

2. An apparatus according to claim 1, wherein: said at least two rotatable shafts comprise more than two rotatable shafts.

3. An apparatus according to claim 1, wherein: some of said sliding wheels comprise at least one annular groove.

4. An apparatus according to claim 1, wherein: said sliding wheels have different thicknesses and diameters.

5. An apparatus according to claim 1, wherein: some of said sliding wheels are provided with a variable width of said annular groove.

6. An apparatus according to claim 1, further comprising: restricting wheels fixed on said shafts.

7. An apparatus according to claim 1, wherein: said elastic collars are provided with different axial lengths.

8. An apparatus according to claim 1, wherein: said elastic collars are made from different elastic materials.

9. A method of corrugating a sleeve and/or a sheet using the apparatus of claim 1.