US 2003/0155096 A1 · Metal die device for casting

Abstract

A metal die device for casting of a simpler device structure by which a cast product having an undercut may directly be produced is disclosed. A casting (cavity) S is provided between a fixed die 21 and a movable die 31 as a movable core 40 having an undercut forming projection 41 is interposed between the fixed and movable dies. A swing member 54, caused to swing by a cylinder 51, is provided overlying the movable die 31. On the swing member 54, there is provided a cylinder 57 for vertically sliding the core 40. In die opening, following casting, the core 40 is vertically slid and subsequently caused to swing towards an upper outer side to release the core 40 from the cast product. Degree of freedom in metal designing is achieved without excess restriction in the shape or position of the undercut.

Claims18

Dependent claims

A metal die device for forming a cast product having an undercut, comprising:

first and second dies for being moved towards and away from each other, said dies when closed defining a casting cavity therein;
a core having an undercut forming projection;
and
a core driving mechanism for sliding the core in a direction substantially perpendicular to a direction of movement of said first and second dies towards and away from each other, and for causing said core to swing towards outside from a position between the first and second dies which are in a state separated from each other;
wherein the metal die device comprises;
a first state at which the undercut forming projection of said core is arranged in said casting space for producing a cast product;
and
a second state at which said core is caused to slide and swing by said core driving mechanism at the time of opening said first and second dies to disengage said core from the cast product and to enable the cast product to be dismounted from one of said dies.

5 more elements

A metal die device for forming a cast product having an undercut, comprising

first and second dies for being moved towards and away from each other, said dies when closed defining a casting cavity therein;
a core having an undercut forming projection;
and
a core driving mechanism for sliding the core in a direction substantially perpendicular to a direction of movement of said first and second dies towards and away from each other, and for causing said core to swing towards outside from a position between the first and second dies which are in a state separated from each other;
wherein the metal die device comprises;
means for providing a first state at which the undercut forming projection of said core is arranged in said casting space for producing a cast product;
and
means for providing a second state at which said core is caused to slide and swing by said core driving mechanism at the time of opening said first and second dies to disengage said core from the cast product so as to enable the cast product to be dismounted from one of said dies.

5 more elements

A metal die device for forming a cast product having an undercut, comprising

first and second dies for being moved towards and away from each other, said dies when closed defining a casting cavity therein;
a core having an undercut forming projection;
and
a core driving mechanism for sliding the core in a direction substantially perpendicular to a direction of relative movement of said first and second dies each other, and for causing said core to swing towards outside from a position between the first and second dies which are in a state separated from each other;
wherein the metal die device comprises;
a first state at which the undercut forming projection of said core is arranged in said casting space for producing a cast product;
and
a second state at which said core is caused to slide and swing by said core driving mechanism at the time of opening said first and second dies to disengage said core from the cast product and to enable the cast product to be dismounted from one of said first and second dies;
said core driving mechanism comprising;
a slide mechanism operatively connected to said core for causing said core to slide in a direction substantially perpendicular to the direction of the relative movement of said first and second dies for bringing said undercut forming projection of the core from said one of first and second dies to a position just released;
and
a swing mechanism operatively connected to said slide mechanism for causing said core and the slide mechanism to swing from said just released position towards outside of a core position for casting between the first and second dies in the state separated from each other.

9 more elements

Dependencies are inferred from the claim text.

Metal die device for casting

Life of this patent

Metal die device for casting

Life of this patent

Abstract

Claims18