Nozzle assembly for expelling a viscous mass

A nozzle assembly, comprising:

• a nozzle including a continuous sidewall having an open inlet end for receiving a viscous mass, an open outlet end for expelling said viscous mass, and a bore extending therethrough for communicating the viscous mass from said open inlet end to said open outlet end;
• a valve pin extending therethrough said bore of said nozzle, said valve pin having a valve tip movable between an extended position for blocking said open outlet for inhibiting viscous mass to flow therethrough, and a retracted position for unblocking said outlet end for allowing viscous mass to flow therethrough;
• a sleeve having an open upper end, an open lower end, and a bore extending therethrough communicating said open upper end with said open lower end, said sleeve housed axially within, and detachably engaged to, said bore of said nozzle in spaced relation to said continuous sidewall, said open lower end of said sleeve positioned intermediate said inlet end and said outlet end of said nozzle in spaced-apart and diametrically opposed relation to said outlet end, said bore of said sleeve being operative for receiving said valve pin therethrough for guiding said valve pin between said extended position and said retracted position;
• and
• alignment means for aligning said sleeve within said bore of said nozzle in substantially axial alignment.

A nozzle assembly, comprising:

• a nozzle including a continuous sidewall having an open inlet end for receiving a viscous mass, an open outlet end for expelling said viscous mass through into and through a cavity, and a bore extending therethrough for communicating the viscous mass from said open inlet end to said open outlet end;
• a valve pin extending therethrough said bore of said nozzle, said valve pin having a valve tip movable between an extended position for blocking said open outlet for inhibiting viscous mass to flow therethrough, and a retracted position for unblocking said outlet end for allowing viscous mass to flow therethrough;
• a sleeve having an open upper end, an open lower end, and a bore extending therethrough communicating said open upper end with said open lower end, said sleeve housed axially within said bore of said nozzle in spaced relation to said continuous sidewall, said open lower end of said sleeve positioned intermediate said inlet end and said outlet end of said nozzle in spaced-apart and diametrically opposed relation to said outlet end, said bore of said sleeve being operative for receiving said valve pin therethrough for guiding said valve pin between said extended position and said retracted position;
• alignment means for aligning said sleeve within said bore of said nozzle in substantially axial alignment;
• and
• a cavity insert detachably engagable to said open outlet end of said nozzle and sealingly engagable to said cavity, said cavity insert having a bore communicating with said open outlet end when engaged thereto for receiving therethrough said valve tip when disposed in said extended position and for communicating viscous mass into and therethrough said cavity when said valve tip is disposed in said retracted position.