초록

A mold, or die is easily and conveniently maintainable, includes releasably retained parts and permits access and removal of mold parts or elements that may need maintenance, repair or replacement without removal of the mold or die from a die casting machine.

대표청구항 ▼

We claim: 1. A die for casting a V-block for an internal combustion engine in a die-casting machine having a stationary platen and a movable platen, comprising: a stationary die element for mounting on the stationary platen of the die casting machine, and a movable die element for mounting on the m

We claim: 1. A die for casting a V-block for an internal combustion engine in a die-casting machine having a stationary platen and a movable platen, comprising: a stationary die element for mounting on the stationary platen of the die casting machine, and a movable die element for mounting on the movable platen of the die-casting machine, said movable die element carrying a plurality of transversely movable, cavity-forming slides and at least a pair of cylinder-forming die parts removably retained in means for reciprocating the pair of cylinder-forming die parts at an acute angle with respect to the movement of the movable platen between extended positions within the die cavity and retracted positions within the movable die element, each of said at least a pair of cylinder-forming die parts having a rearward portion providing an engagable surface, locking elements carried within, and accessible from outside of, said reciprocating means, engaging the engagable rearward portions of the cylinder-forming die parts for removably retaining said cylinder-forming die parts in said reciprocating means, and die core locking means for locking the cylinder-forming die parts in their extended positions. 2. The die of claim 1, wherein said locking elements comprise threaded fastener pins. 3. The die of claim 2, wherein the pins include threaded portions threadedly engaged with the means for reciprocating the cylinder-forming die parts. 4. The die of claim 1, wherein the locking elements are movably carried within the reciprocating means between a locking engagement and an unlocking disengagement with the cylinder-forming die parts. 5. The die of claim 4, wherein the cylinder-forming die parts include portions extending rearwardly from their cylinder-forming portions with engagable portions adjacent their rears, and the locking elements are movably carried by the reciprocating means between locking positions in which they engage the engagable portions of the cylinder-forming die parts in the reciprocating means, and retracted positions in which they are disengaged from the engagable portions of the cylinder-forming die parts, permitting the cylinder-forming die parts to be removed from the die. 6. The die of claim 5, wherein the cylinder-forming die parts include rearwardly extending rods and the engagable portions of the cylinder-forming die parts comprise rod portions adjacent the rear of the rods that are larger than the rods and smaller than the cylinder-forming die parts, and the locking elements comprise yokes shaped and located to engage the rod portions in their locking positions. 7. The die of claim 1 wherein the die core locking means are movably carried by operation of the die into locking engagement with the cylinder-forming die parts in their extended positions. 8. The die of claim 7, wherein the die core locking means comprises a die core locking member reciprocatably carried along the axis of movement of the movable platen and operable in its forwardmost position to engage rear portions of the cylinder-forming die parts and lock the cylinder-forming die parts in their extended positions. 9. A die for casting a V-block for an internal combustion engine in a die-casting machine having a stationary platen and a movable platen, comprising: a stationary die element for mounting on the stationary platen of the die casting machine, and a movable die element for mounting on the movable platen of the die-casting machine, said movable die element carrying a plurality of transversely movable, cavity-forming slides and at least a pair of cylinder-forming die parts, and means for reciprocating the at least a pair of cylinder-forming die parts at an acute angle with respect to the movement of the movable platen between extended positions within the die cavity and retracted positions within the movable die element, said cylinder-forming die parts being removably held in said movable die element by rearward engagable portions within the means for reciprocating the at least a pair of cylinder-forming die parts and holding elements movably carried by the reciprocating means between holding positions in which they engage the rearward engagable portions of the cylinder-forming die parts and releasing positions in which they are disengaged from the rearward engagable portions of the cylinder-forming die parts. 10. The die of claim 9, wherein at least one of said cylinder-forming parts comprises cylinder-forming and water jacket-forming die pieces adapted to be removed together when the stationary platen and movable platen at the die-casting machine are separated. 11. The die of claim 10, wherein the at least one cylinder-forming die core part includes means for reducing the temperature of the water jacket-forming die piece. 12. The die of claim 11, wherein cylinder-forming die core pieces of the cylinder-forming die parts convey coolant adjacent portions of their outer surfaces, and the attached water jacket-forming die core pieces have interior surfaces that interface with said outer surface portions of the cylinder-forming die core pieces. 13. The die of claim 9, wherein the cylinder-forming die parts are removably held in the movable die element by holding elements accessible from outside of the movable die element. 14. The die of claim 13, wherein said holding elements comprises pins including threaded portions for fastening the cylinder-forming die parts to their reciprocating means. 15. The die of claim 9, wherein the cylinder-forming die parts include portions extending rearwardly from their cylinder-forming portions with engagable portions adjacent their rears, and the holding elements are movably carried by the reciprocating means between holding positions in which they engage the engagable portions of the cylinder-forming die parts in the reciprocating means and releasing positions in which they are disengaged from the engagable portions of the cylinder-forming die parts, permitting the cylinder-forming die parts be removed from the die. 16. The die of claim 15, wherein the cylinder-forming die parts include rearwardly extending rods, and the engagable portions of the cylinder-forming die parts comprise rod portions adjacent the rear of the rods that are larger than the rods and smaller than the cylinder-forming die parts, and the holding elements comprise yokes shaped and located to engage the forward portions of the rod portions in their holding positions. 17. The die of claim 9, wherein the cylinder-forming die parts include one or more coolant passageways connectable with an external source of coolant. 18. The die of claim 17, wherein one or more tubular conduits for coolant are connected at the rear of the movable die element and provide a rearward surface that can be used to remove the cavity-forming die parts from the movable die element.