Patent ID: 8066505

Claim:
An injection molding nozzle ( 10 ) for an injection mold, comprising: a) a nozzle body ( 20 ) having a flow duct ( 21 ) for an injection molding material to be processed, said flow duct ( 21 ) terminating at or in the minimum of one nozzle tips ( 30 ) and communicating flow-wise via at least one outlet aperture ( 35 ) with an injection mold cavity subtended in a mold insert; b) a fastener ( 40 ) for the nozzle tips ( 30 ) extending the flow duct ( 21 ) of the nozzle body ( 20 ) and feeding the injection molding material to be processed to the minimum of one nozzle tips ( 30 ) and/or to the at least one outlet aperture ( 35 ), and c) a retainer ( 50 , 50 ′) which is separate from the nozzle body ( 20 ), said retainer ( 50 , 50 ′) having boreholes ( 51 , 51 ′) receiving the at least one nozzle tip ( 30 ), and a recess ( 52 , 52 ′) receiving the fastener ( 40 ); d) wherein each nozzle tip ( 30 ) is detachably affixable by the fastener ( 40 ) in the separate retainer ( 50 , 50 ′); e) wherein said fastener ( 40 ) projects through the retainer ( 50 , 50 ′) and is guided longitudinally in the nozzle body ( 20 ), the fastener ( 40 ) having a neck ( 41 ) entering the flow duct ( 21 ) of the nozzle body ( 20 ) in a longitudinally displaceable manner; f) wherein the boreholes ( 51 , 51 ′) of the retainer ( 50 , 50 ′) for the nozzle tips ( 30 ) and each nozzle tip ( 30 ) being aligned transversely to the axial direction (A) of the nozzle body ( 20 ); g) said neck ( 41 ) of the fastener ( 40 ) having a main duct ( 62 ) extending into the flow duct ( 21 ) of the nozzle body ( 20 ), and h) the fastener ( 40 ) having sub-manifold ducts ( 64 ) communicating flow-wise with the main duct ( 62 ) and feeding injection melt to be processed to the minimum of one nozzle tips ( 30 ) and to the at least one outlet aperture ( 35 ); i) said at least one nozzle tip ( 30 ) having a nozzle duct ( 34 ) and at least one of the outlet apertures ( 35 ) for the molding material to be processed, said nozzle duct ( 34 ) communicating flow-wise with the sub-assembly duct ( 64 ) of the fastener ( 40 ); j) wherein each nozzle tip ( 30 ) rests within the recess ( 51 , 52 ′) and against the inside surface ( 524 , 524 ′) of the retainer ( 50 , 50 ′) and against the a side face ( 45 ) of the fastener ( 40 ), each nozzle tip ( 30 ) resting in a sealing manner against said side face ( 45 ) of the fastener ( 40 ); and k) wherein each nozzle tip ( 30 ) is coaxially enclosed by a sleeve stub ( 56 ) configured between the retainer ( 50 , 50 ′) and the mold insert, each sleeve stub ( 56 ) rests against a face of a widened section ( 511 ) of the borehole located at the outside of the borehole ( 51 ).