Patent ID: 6851944

Claim:
Mold tool clamping device for blow mold machines, in which a blow mold comprising two mold halves or mold tools, which can be pushed together via a closure driver or actuator, in such a manner, that in the closed configuration of the blow mold they lie directly against each other along a central plane and are again separable from each other “symmetric to this central plane”, wherein an electric or hydraulic linear actuator is provided as the closure actuator, which engages on the “back” side of the clamp plate ( 16 ) facing the actuator and the further aggregates of the machine carrying machine frame, which clamp plate ( 16 ) is synchronized via a synchronization drive with the “front” clamp plate ( 14 ) on which the “front” mold tool is clamped, the synchronization being such that both mold halves are displaceable by a defined stroke relative to the blow mold central plane, and wherein for fixing the mold halves ( 12 , 13 ) on their clamp plates ( 14 or 16 ) these are provided with clamping bolts traversing these and connected resistant against pulling with the mold halves, which have anchoring end segments projecting or exiting from the clamp plates, which are engaged by the clamp elements, which respectively maintain the mold halves releasably fixed to the clamp plates which carry them, wherein a) for securing the back blow mold half ( 13 ) to the clamp plate ( 16 ) which carries it, at least two wedge locks or cam locks are provided in a symmetric arrangement relative to the “vertical” central plane of the blow mold perpendicular to the plane of separation of the mold halves ( 12 , 12 ), which wedge locks can be tensioned b) by driving of clamp wedges, which are supported on planar surfaces on the back side of the clamp plate, into anchor grooves or keyways of the clamp bolts running perpendicular to the longitudinal axis of the clamp bolts, which have external slide surfaces running at the wedge angle of the clamp wedges relative to the outer clamp plate plane, with which slide surfaces the wedge surfaces oblique with respect to the clamp plates come into supporting contact when the wedges are driven into the anchor groves, such that the driving together of the wedge surfaces running diagonally to the clamp plates results in tensioning, wherein c) for tensioning and releasing the wedge locks a manual or motor driven linear actuator is provided, which sets the fixing of the tensioning wedges by self jamming.