Patent ID: 8333581

Claim:
A molding unit attachment system, enabling the attachment of at least one interchangeable molding part into a seating arranged on a support of a complementary shape, said interchangeable molding part having a molding surface, said system comprising: at least one mobile locking device that moves between an active locking position and an inactive locking position, said mobile locking device comprising an elastic return means for automatically returning the mobile locking device from said inactive locking position to said active locking position, the mobile locking device configured to be manually placed in the inactive position by an operator, wherein the attachment system further comprises on one side of said interchangeable molding part which is parallel to a central axis of said interchangeable molding part, at least one fixed device acting as a stop, the mobile locking device being positioned on the other side of the interchangeable part; and wherein a portion of said mobile locking device that is configured to engage the interchangeable mold part protrudes from the support in a direction of the molding surface when in the active locking position.