Apparatus for mixing and dosing synthetic resin components and process for the operation of this apparatus

Claim 1

A mixing head for mixing and dosing at least two synthetic resin components together to produce a single product, said head comprising: a mixing head casing having an end port; a rotor drive shaft extending in the casing and having a drive end extending out of the end port; a hollow mixing chamber for receiving said components, the components being mixed together in the chamber to produce the product, the chamber having a discharge port through which the product is discharged, said chamber having a connection port adapted for detachable connection with the end port; first quick connecting-disconnecting means mounted partially at the end port of the casing and partially at the connection port of said chamber for detachably connecting the end port of the casing to and disconnecting the end port of the casing from the connection port of the chamber; rotor means including a mixing rotor disposed in the chamber and having an end facing said drive end of the shaft; and second quick connecting-disconnecting means mounted partially on the drive end of the shaft and partially on the end of the rotor facing said drive end of the shaft for detachably connecting the shaft to and disconnecting the shaft from the rotor, said rotor and said shaft having a common axis, said first means including a first outer circular convex coupling ring provided at one of the end and connection ports and a first inner circular concave groove provided at the other of the end and connection ports, said first ring and first groove being adapted for detachable mating engagement to connect said casing and said chamber to each other in an aligned position thereof, said second means including a second outer circular convex coupling ring at one of said end of the rotor and said drive end of the shaft and a second inner circular concave groove at the other of said end of the rotor and said drive end of the shaft, said second ring and second groove being adapted for detachable mating engagement to connect said shaft and said rotor to each other in an axially aligned position thereof whereby said mixing chamber and said mixing rotor can be replaced by a clean product-free chamber and a clean product-free rotor in the mixing head.