Method for cutting a tube segment from a tube

Abstract

The invention relates to a method for cutting a tube segment ( 1 ) from a tube, said tube being provided with an inner tube ( 2 ) and an outer tube casing ( 3 ) surrounding the inner tube ( 2 ). Said the tube segment ( 1 ) is separated from the tube, by means of a cutting tool, at a cutting point in a cutting plane oriented transversely to the longitudinal extension of the tube. The tube casing ( 3 ) of the tube is surrounded by a separable tube retainer ( 4 ), which covers the provided cutting point before the tube segment ( 1 ) is separated from the tube, by means of the cutting tool, at the cutting point, wherein the tube retainer ( 4 ) completely surrounds the outer tube casing ( 3 ) in a peripheral direction. Said claimed method and tube segment produced according to said method are characterised in that the tube retainer ( 4 ) is fixed to the tube casing ( 3 ), and/or the tube surrounded by the tube retainer ( 4 ) is separated by means of the cutting tool such that a relative displacement of the tube retainer ( 4 ) with respect to the tube casing ( 3 ), that is, of the tube casing ( 3 ) with respect to the inner tube ( 2 ), is prevented.

1 . A method for cutting a hose segment ( 1 ) to length from a hose, said hose has an inner hose ( 2 ) and an outer hose casing ( 3 ) surrounding the inner hose ( 2 ), wherein the hose segment ( 1 ) is separated from the hose in a cutting plane oriented perpendicular to the longitudinal extent of said hose by means of a cutting tool at a cutting point, wherein the hose casing ( 3 ) of the hose is ensheathed with a severable hose fixing means ( 4 ) which covers the intended cutting point before the hose segment ( 1 ) is separated from the hose at the cutting point by means of the cutting tool, wherein the hose fixing means ( 4 ) fully surrounds the outer hose casing ( 3 ) in a circumferential direction, and wherein the hose fixing means ( 4 ) is fixed on the hose casing ( 3 ), and/or the hose surrounded by the hose fixing means ( 4 ) is severed by means of the cutting tool, in such a way that a relative displacement of the hose fixing means ( 4 ) with respect to the hose casing ( 3 ) and/or of the hose casing ( 3 ) with respect to the inner hose ( 2 ) is prevented, wherein the hose fixing means ( 4 ) in the form of an adhesive tape which is adhesive on one side has a middle part ( 6 ) which fully surrounds the hose and which is adjoined at both sides by hose fixing end parts ( 7 ,  8 ), in that the hose fixing end parts ( 7 ,  8 ) bear with their adhesive surfaces ( 9 ) against one another, and in that the hose fixing end parts ( 7 ,  8 ), bearing with their adhesive surfaces ( 9 ) against one another, are laid against the hose such that the adhesive surface ( 9 ) of one of the hose fixing end parts ( 7 ,  8 ) is, by way of a subregion protruding beyond the other hose fixing end part ( 7 ,  8 ), held adhesively on the hose or on the hose segment. 
     
     
         2 . A hose segment ( 1 ) having an inner hose ( 2 ) and having an outer hose casing ( 3 ) surrounding the inner hose ( 2 ), said hose casing ( 3 ) is ensheathed by a cut-to-length, severable hose fixing means ( 4 ) which extends as far as a cutting plane formed by a face end of the hose segment and oriented perpendicular to the longitudinal extent of the hose segment ( 1 ), and which at least fully surrounds the outer hose casing ( 3 ) in a circumferential direction with a wrap angle of at least 360°, wherein the hose fixing means ( 4 ) is fixed on the outer hose casing ( 3 ) such that a relative displacement of the hose fixing means ( 4 ) with respect to the hose casing ( 3 ) and/or of the hose casing ( 3 ) with respect to the inner hose ( 2 ) is prevented, wherein the hose fixing means ( 4 ) in the form of an adhesive tape which is adhesive on one side has a middle part ( 6 ) which fully surrounds the hose and which is adjoined at both sides by hose fixing end parts ( 7 ,  8 ), in that the hose fixing end parts ( 7 ,  8 ) bear with their adhesive surfaces ( 9 ) against one another, and in that the hose fixing end parts ( 7 ,  8 ), bearing with their adhesive surfaces ( 9 ) against one another, are laid against the hose such that the adhesive surface ( 9 ) of one of the hose fixing end parts ( 7 ,  8 ) is, by way of a subregion protruding beyond the other hose fixing end part ( 7 ,  8 ), held adhesively on the hose or on the hose segment. 
     
     
         3 . The method as claimed in  claim 1 , wherein the hose is cut to length by means of a cutting blade ( 12 ) which serves as a cutting tool and which is guided approximately perpendicularly with respect to the hose longitudinal direction. 
     
     
         4 . The method as claimed in  claim 1 , wherein a clamping sleeve, a crimp sleeve or similar hose end piece ( 5 ) is pushed onto an end of the hose segment ( 1 ) which is secured by the hose fixing means ( 4 ), and the hose fixing means ( 4 ) protrudes beyond the inner end of the hose end piece ( 5 ) and forms a kink prevention means. 
     
     
         5 . The method as claimed in  claim 1 , wherein the hose is cut to length by means of a cutting tool ( 13 ) which generates cutting heat, in such a way that plastic material, which becomes pasty under action of the cutting heat, of at least one of the constituents: hose fixing means ( 4 ), hose casing ( 3 ) and/or inner hose ( 2 ), fixes at least in regions to at least one of the adjacent constituents ( 2 ,  3 ,  4 ). 
     
     
         6 . The hose segment as claimed in  claim 2 , wherein the hose is cut to length by means of a cutting blade ( 12 ) which serves as a cutting tool and which is guided approximately perpendicularly with respect to the hose longitudinal direction. 
     
     
         7 . The hose segment as claimed in  claim 2 , wherein a clamping sleeve, a crimp sleeve or similar hose end piece ( 5 ) is pushed onto an end of the hose segment ( 1 ) which is secured by the hose fixing means ( 4 ), and the hose fixing means ( 4 ) protrudes beyond the inner end of the hose end piece ( 5 ) and forms a kink prevention means. 
     
     
         8 . The hose segment as claimed in  claim 2 , wherein the hose is cut to length by means of a cutting tool ( 13 ) which generates cutting heat in such a way that plastic material, which becomes pasty under action of the cutting heat, of at least one of the constituents: hose fixing means ( 4 ), hose casing ( 3 ) and/or inner hose ( 2 ), fixes at least in regions to at least one of the adjacent constituents ( 2 ,  3 ,  4 ).