Roll manufacturing method and roll, particularly for paper machines

Abstract

A roll manufacturing method and roll, particularly for paper machines, wherein an inner roll body is surrounded by a strip having circumferential portions such as windings which engage and extend outwardly from an exterior surface of the inner roll body with the successive windings or circumferential strip portions engaging each other so that the engaging side surfaces of successive strip turns define an interface between themselves. The side surfaces of the strip are formed with registering grooves which thus define a bore extending across the interface, and an elongated interlocking member is situated in the latter bore so as to interlock the successive turns or circumferential strip portions against radial displacement outwardly away from the inner roll body. The interlocking member preferably has a fluid-tight sealing engagement with the groove surfaces which define the bore which receives the interlocking member, so that the interlocking member also forms a moisture barrier.

I claim: 
     
       1. In a roll of the type which is adapted to be used in a paper machine, an inner roll body of cylindrical configuration having an elongated central axis and an exterior cylindrical surface, and an elongated strip having successive portions circumferentially surrounding said inner roll body and engaging said exterior surface thereof with said circumferential portions of said strip having opposed side surfaces arranged with the side surface of one circumferential portion of said strip engaging the side surface of the next circumferental portion of said strip, said engaging side surfaces of successive circumferential portions of said strip respectively being formed with registering grooves which cooperate to define an elongated bore circumferentially surrounding said inner roll body and spaced therefrom, and an elongated interlocking member situated in said bore. 
     
     
       2. The combination of claim 1 and wherein said interlocking member fills said bore and is of substantially the same cross section as said bore. 
     
     
       3. The combination of claim 1 and wherein said interlocking member substantially fills said bore and has a fluid-tight sealing engagement with the groove surfaces which define said bore. 
     
     
       4. The combination of claim 1 and wherein the cross section of said interlocking member substantially is the same as the cross section of said bore. 
     
     
       5. The combination of claim 1 and wherein the grooves which define said bore are of the same cross section. 
     
     
       6. The combination of claim 1 and wherein the grooves which define said bore are respectively of different cross sections while said interlocking member is of an asymmetric cross section and substantially fills the grooves which define said bore. 
     
     
       7. The combination of claim 1 and wherein each side surface of said strip portions are formed with a plurality of grooves respectively defining a plurality of said bores, and a plurality of interlocking members situated in said bores. 
     
     
       8. The combination of claim 1 and wherein said grooves are each of a dovetail cross section, and said interlocking member having at an interface defined between engaging surfaces of successive strip portions a width smaller than the width of said interlocking member at portions thereof spaced from said interface and situated in the dovetail grooves which define said bore, so that said interlocking member interlocks said successive strip portions not only radially with respect to the axis of said inner roll body but also axially with respect thereto. .Iadd. 
     
     
       9.  In a roll of the type which is adapted to be used in a paper machine, an inner roll body of cylindrical configuration having an elongated central axis and an exterior cylindrical surface, and an elongated strip having successive portions circumferentially surrounding said inner roll body and engaging said exterior surface thereof with said circumferential portions of said strip having opposed side surfaces, said opposed side surfaces of successive circumferential portions of said strip respectively being formed with registering grooves, and an elongated interlocking member situated in said registering grooves. .Iaddend.