A holding device for abrasive strips and use of a holding device

Abstract

Disclosed is a holding device ( 1 ) for abrasive strips ( 2 ). The holding device ( 1 ) comprises a drum ( 3 ) being substantially cylindrical and including a number of undercut axial grooves ( 4 ) extending from a first axial drum end ( 5 ) of the drum ( 3 ) toward a second axial drum end ( 6 ) of the drum ( 3 ), wherein one or more stops ( 7 ) are arranged to block at least a part of each of the number of undercut axial grooves ( 4 ) at the second axial drum end ( 6 ), wherein the drum ( 3 ) comprises a blind hole ( 8 ) in the centre of the first axial drum end ( 5 ), and wherein a non-circular engagement indentation ( 9 ) is formed in the centre of the bottom ( 10 ) of the blind hole ( 8 ). The holding device ( 1 ) also comprises a shaft ( 11 ) arranged coaxially with the drum ( 3 ), wherein the shaft ( 11 ) comprises a main shaft part ( 12 ) including a first axial shaft end ( 13 ) extending from the drum ( 3 ) and arranged for being connected to rotation drive means. The shaft ( 11 ) further comprises an external non-circular engagement structure ( 14 ) arranged at a second axial shaft end ( 15 ) of the main shaft part ( 12 ), wherein the external non-circular engagement structure ( 14 ) is arranged in the non- 15 circular engagement indentation ( 9 ) to rotatably lock the shaft ( 11 ) to the drum ( 3 ), and wherein the greatest radial extent (GES) of the external non-circular engagement structure ( 14 ) is greater than the greatest radial extent (GEM) of the main shaft part ( 12 ). Furthermore, the holding device ( 1 ) comprises an end plug ( 16 ) being releasably connected to the drum ( 3 ), wherein the end plug ( 16 ) comprises a centre protrusion ( 17 ) extending into the blind hole ( 8 ) to restrict axial displacement of the external non-circular engagement structure ( 14 ) to substantially fixate an axial position of the shaft ( 11 ) in relation to the cylindrical drum ( 3 ) and wherein the end plug ( 16 ) further comprises groove blocking means ( 18 ) arranged to block at least a part of each of the number of undercut axial grooves ( 4 ) at the first axial drum end ( 5 ). Use of a holding device ( 1 ) is also disclosed.

1 . A holding device for abrasive strips, said holding device comprising,
 a drum being substantially cylindrical and including a number of undercut axial grooves extending from a first axial drum end of said drum toward a second axial drum end of said drum, wherein one or more stops are arranged to block at least a part of each of said number of undercut axial grooves at said second axial drum end, wherein said drum comprises a blind hole in the centre of said first axial drum end, and wherein a non-circular engagement indentation is formed in the centre of the bottom of said blind hole,   a shaft arranged coaxially with said drum, wherein said shaft comprises a main shaft part including a first axial shaft end extending from said drum and arranged for being connected to a rotation driver, wherein said shaft further comprises an external non-circular engagement structure arranged at a second axial shaft end of said main shaft part, wherein said external non-circular engagement structure is arranged in said non-circular engagement indentation to rotatably lock said shaft to said drum, and wherein the greatest radial extent of said external non-circular engagement structure is greater than the greatest radial extent of said main shaft part, and   an end plug being releasably connected to said drum, wherein said end plug comprises a centre protrusion extending into said blind hole to restrict axial displacement of said external non-circular engagement structure to substantially fixate an axial position of said shaft in relation to said cylindrical drum and wherein said end plug further comprises a groove blocker arranged to block at least a part of each of said number of undercut axial grooves at said first axial drum end.   
     
     
         2 . The holding device according to  claim 1 , wherein at least a part of said centre protrusion of said removable end plug is cylindrical and comprises external threading, wherein at least a part of said coaxial blind hole is cylindrical and comprises internal threading, and wherein said end plug is releasably connected to said drum by said internal threading meshing with said external threading. 
     
     
         3 . The holding device according to  claim 1 , wherein said end plug comprises grip indentation or grip protrusions. 
     
     
         4 . The holding device according to  claim 1 , wherein said drum and said end plug are made of a plastic material and wherein said shaft is made of metal. 
     
     
         5 . The holding device according to  claim 1 , wherein said first axial shaft end is arranged to extend from said first axial drum end and wherein said main shaft part is extending through a centre through plug hole in said end plug. 
     
     
         6 . The holding device according to  claim 1 , wherein said first axial shaft end is arranged to extend from said second axial drum end and wherein said main shaft part is extending through a centre through drum hole in said drum. 
     
     
         7 . The holding device according to  claim 1 , wherein said one or more stops are formed integrally with said drum. 
     
     
         8 . The holding device according to  claim 1 , wherein said holding device further comprises a fixator arranged to fixate said external non-circular engagement structure in said non-circular engagement indentation. 
     
     
         9 . The holding device according to  claim 1 , wherein the greatest radial extent of said groove blocker is greater than the outer diameter of said drum. 
     
     
         10 . A method of holding abrasive strips, wherein said method comprises
 forming the holding device according to  claim 1 ,   removing said end plug from said drum,   placing abrasive strips in said number of undercut axial grooves in said drum, and   reconnecting said end plug to said drum.   
     
     
         11 . The holding device according to  claim 2 , wherein said end plug comprises grip indentation or grip protrusions.