Closing mechanism for the mold halves of an i.s. machine

A closing mechanism for the molds of an IS machine with two mold holders (3, 4;

• 27, 28) that can be displaced between an open and a closed position and are respectively designed for carrying at least one mold half (5, 29), and with at least one drive that is designed for displacing the mold holders (3, 4;
• 27, 28) between the aforementioned positions, wherein each mold holder (3, 4;
• 27, 28) is equipped with an integrated duct network designed for conveying a coolant, characterized in that the mold holders (3, 4;
• 27, 28) are realized in a yoke-like fashion, supported on linear guides (1, 2;
• 25, 26) extending parallel to one another on both sides and displaceable between the aforementioned positions, in that the two mold holders (3, 4;
• 27, 28) are connected to one another by means of at least one spindle gear (13, 36, 37) designed for generating a linear motion, in that the drive is coupled to this spindle gear, in that the spindle gear (13, 36, 37) used consists of a threaded spindle (38) that is connected to the drive and features two oppositely oriented thread sections (39, 40) that are respectively engaged with a threaded sleeve connected to a mold holder (3, 4;
• 27, 28), in that housings (74, 75) are realized in the form of parts of the machine base body of the IS machine and designed for at least accommodating the spindle gears (13, 36, 37), wherein the housings (74, 75) are connected to one another in a direction extending perpendicular to the guides (1, 2;
• 25, 26) by means of transverse structures (76, 77), and in that at least one network (78, 79) designed for conveying a coolant is arranged within the transverse structures (76, 77).