Locking mechanism for diecasting

Claim 2

In a die-casting machine the combination comprising a stationary cover die and an ejector die assembly movable along the longitudinal axis of said machine between a die-open and a die-closed position defining a die cavity therebetween in said closed position, said ejector die assembly comprising a plurality of die portions movable independently of said cover die between an ejector die open-and-closed position including a first main die portion movable between said die-open and die-closed positions along said longitudinal axis, a second die portion carried by said first die portion at less than a right angle to said longitudinal axis and movable between said ejector die openand-closed positions and a third die portion carried by said first die and movable transversely of said longitudinal axis between said ejector die open-and-closed positions, said second die portion including depression means and said third die portion including projection means and said depression means being adapted to receive said projection means when said second and third die portions are each in said ejector die-closed position whereby said third die portions lock said second die in said ejector die-closed position, said third die portion including projection means and said cover die including depression means and said third die portion projection means being adapted to be received in said cover die depression means when said cover die and said ejector die assembly are in said die-closed position whereby said third die portion is locked in said die-closed position and means for holding said cover die and ejector die assembly in said die-closed position.

Claim 3

In a die-casting machine the combination comprising a stationary cover die and an ejector die assembly movable along the longitudinal axis of said machine between a die-open and a die-closed position defining a die cavity therebetween in said closed position, said ejector die assembly comprising a plurality of die portions movable independently of said cover die between an ejector die open-and-closed position including a first main die portion movable between said die-open and die-closed positions along said longitudinal axis, a pair of opposed second die portions carried by said first die portion at less than a right angle to said longitudinal axis comprising movable between said ejector die open-and-closed positions and a pair of opposed third die portions carried by said first die and movable transversely of said longitudinal axis between said ejector die open-and-closed positions, each of said second die portions including depression means and each of said third die portions including projection means and each of said depression means being adapted to receive one of said projection means when said second and third die portions are each in said ejector die-closed position whereby said third die portions lock said second die portions in said ejector die-closed position, said third die portions including projection means and said cover die including depression means and said third die portions projection means being adapted to be received in said cover die depression means when said cover die and said ejector die assembly are in said die-closed position whereby said third die portions are locked in said die-closed position and means for holding said cover die and said ejector die assembly in said die-closed position.

Claim 4

In a die-casting machine the combination comprising a stationary cover die and an ejector die assembly movable along the longitudinal axis of said machine between a die-open and a die-closed position defining a die cavity therebetween in said closed position, said ejector die assembly comprising a plurality of die portions movable independently of said cover die between an ejector die open-and-closed position including a first main die portion movable between said die-open and die-closed positions along said longitudinal axis, a pair of opposed second die portions carried by said first die portion at less than a right angle to said longitudinal axis comprising movable between said ejector die open-and-closed positions and a pair of opposed third die portions carried by said first die and movable transversely of said longitudinal axis between said ejector die open-and-closed positions, each of said second die portions including depression means and each of said third die portions including projection means and each of said depression means being adapted to receive one of said projection means when said second and third die portions are each in said ejector die-closed position whereby said third die portions lock said second die portions in said ejector die-closed position, said third die portions including projection means and said cover die including depression means and said third die portions projection means being adapted to be received in said cover die depression means when said cover die and said ejector die assembly are in said die-closed position whereby said third die portions are locked in said die-closed position and means for holding said cover die and said ejector die assembly in said die-closed position.

Claim 5

The die-casting machine of claim 1 wherein said second die portion depression means includes a first surface perpendicular to the longitudinal axis of said second die portion and said third die portion projection means includes a second surface perpendicular to the longitudinal axis of second die portions, said first and second surface being adapted to engage one another in said ejector Die assembly closed position.

Claim 6

In a die-casting machine for casting a V-type engine block including a crankcase cavity, sidewalls, a top side and a plurality of cylinders the combination comprising a stationary cover die and an ejector die assembly movable along the longitudinal axis of said machine between a die-open and a die-closed position defining a die cavity therebetween in said closed position, said cover die defining the crankcase cavity and said ejector die assembly defining the said cylinders, sidewalls and top surfaces of said block, said ejector die assembly comprising a plurality of die portions movable independently of said cover die between an ejector die open-and-closed position including a first main die portion movable between said die-open and die-closed positions along said longitudinal axis, said first die portion defining the top surface of said block, a pair of opposed second die portions carried by said first die portion at less than a right angle to said longitudinal axis and movable between said ejector die open-and-closed positions for defining the said cylinders of said block and a pair of opposed third die portions carried by said first die and movable transversely of said longitudinal axis between said ejector die open-and-closed positions for defining the said sidewalls of said block, each of said second die portions including depression means and each of said third die portions including projection means and each of said depression means being adapted to receive one of said projection means when said second and third die portions are each in said ejector die-closed position whereby said third die portions lock said second die portions in said ejector die-closed position, said third die portions including projection means and said cover die including depression means and said third die portion projection means being adapted to be received in said cover die depression means when said cover die and said ejector die assembly are in said die-closed position whereby said third die portions are locked in said die-closed position and means for holding said cover die and said ejector die assembly in said die-closed position.

Claim 7

In a die-casting machine for casting a V-type engine block including a crankcase cavity, sidewalls, a top side and a plurality of cylinders the combination comprising a stationary cover die and an ejector die assembly movable along the longitudinal axis of said machine between a die-open and a die-closed position defining a die cavity therebetween in said closed position, said cover die defining the crankcase cavity and said ejector die assembly defining the said cylinders, sidewalls and top surfaces of said block, said ejector die assembly comprising a plurality of die portions movable independently of said cover die between an ejector die open-and-closed position including a first main die portion movable between said die-open and die-closed positions along said longitudinal axis, said first die portion defining the top surface of said block, a pair of opposed second die portions carried by said first die portion at less than a right angle to said longitudinal axis and movable between said ejector die open-and-closed positions for defining the said cylinders of said block and a pair of opposed third die portions carried by said first die and movable transversely of said longitudinal axis between said ejector die open-and-closed positions for defining the said sidewalls of said block, each of said second die portions including depression means and each of said third die portions including projection means and each of said depression means being adapted to receive one of said projection means when said second and third die portions are each in said ejector die-closed position whereby said third die portions lock said second die portions in said ejector die-closed position, said third die portions including projection means and said cover die including depression means and said third die portion projection means being adapted to be received in said cover die depression means when said cover die and said ejector die assembly are in said die-closed position whereby said third die portions are locked in said die-closed position and means for holding said cover die and said ejector die assembly in said die-closed position.