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US 4,074,748 AGranted
Centrifugal casting machine having a device for axially placing and maintaining a core in position
AssigneePont-A-Mousson S.A.
InventorRobert Paul Negre
Life of this patent
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AssigneePont-A-Mousson S.A.
InventorRobert Paul Negre
Estimating the term…
The machine comprises a housing, a casting mould rotatably mounted in the housing and a device for axially placing and maintaining a core against the end of the mould. The device comprises an element for urging the core against the mould, a releasable mechanism for fixing the core to the element and means for shifting the element between a position in which it urges the core against the mould and a withdrawn position. According to the invention, the mechanism is movable on the housing between a position in which it fixes the core to the element when the latter applies the core against the mould and a withdrawn position, the arrangement being such that the mechanism can follow, between its withdrawn position and its other position, the movement of the means for shifting the element. A return element is provided for returning the mechanism to its withdrawn position.
A centrifugal casting machine comprising a housing, an open-ended pouring mould mounted to rotate in the housing about an axis, and a device for axially placing and maintaining a core against the open end of the mould, said device comprising a hollow thrust element, first support means carrying the thrust element and movably mounted relative to the housing so as to permit moving the thrust element between an operative position in which position the hollow thrust element maintains the core against the open end of the mould and allows the inside of the mould to be seen and a withdrawn position in which withdrawn position the thrust element is located laterally to one side of the open end of the mould to allow unhindered access to the open end of the mould, a releasable mechanism capable of engaging the core and holding the core against the thrust element when the the thrust element is in said withdrawn position and while the thrust element moves from said withdrawn position to said operative position, means mounted relative to the housing and connected to the first support means for shifting the thrust element between said operative withdrawn position and said withdrawn position, second support means carrying the releasable mechanism and movably mounted relative to the housing and independent of and movable independently of the first support means and transversely of the mould axis so as to permit moving the releasable mechanism between a first position in which position it holds the core against the thrust element in the operative position of the thrust element and a second position in which second position the mechanism is located laterally to one side of the open end of the mould to allow unhindered access to the open end of the mould and through the hollow thrust element when the thrust element is in said operative position, and returning means connected to the second support means for returning the releasable mechanism to said second position, the releasable mechanism being capable of being disengaged from the core when the thrust element is in said operative position and capable of being thereafter moved by said returning means acting on said second support means from said first position to said second position while the thrust element remains in said operative first position, the mechanism being capable, in moving from said second position to said first position, of following the movement of the thrust element from said withdrawn position to said operative position of the thrust element.
A centrifugal casting machine comprising a housing, an open-ended pouring mould mounted to rotate in the housing about an axis, and a device for axially placing and maintaining a core against the open end of the mould, said device comprising a hollow thrust element, a releasable mechanism for engaging the core and holding the core against the thrust element, a pivot shaft supported relative to the housing and perpendicular to the axis of rotation of the mould and disposed laterally of said axis of rotation, first support means carrying the thrust element and mounted on the shaft to rotate about the axis of the shaft and second support means independent of the first support means and carrying the releasable mechanism and mounted on the shaft to rotate about the axis of the shaft independently of the first support means, means mounted relative to the housing and connected to the first support means for shifting the thrust element about the shaft axis between an operative position in which position the thrust element maintains the core against the open end of the mould and allows the inside of the mould to be seen and a position in which withdrawn position the thrust element is located laterally to one side of the open end of the mould to allow unhindered access to the open end of the mould, the second support means being rotatable about the shaft axis to move the releasable mechanism between a first position in which first position it is capable of holding the core against the thrust element in the operative position of the thrust element and a second position in which second position the mechanism is located laterally to one side of the open end of the mould to allow unhindered access to the open end of the mould and axially of the mould through the hollow thrust element when the thrust element is in said operative position, and means connected to the second support means for returning the releasable mechanism to said second position, the releasable mechanism being capable of being disengaged from the core when the thrust element is in said operative position and capable of being thereafter moved by the action of said returning means from said first position to said second position while the thrust element remains in said operative position, the mechanism being capable, in moving from said second position to said first position, of following the movement of the thrust element from the withdrawn position to the operative position of the thrust element.
A centrifugal casting machine comprising a housing, a pouring mould mounted to rotate in the housing about an axis, and a device for axially placing and maintaining a core against the end of the mould, said device comprising an axial thrust element extending along an axis for urging the core against the end of the mould, a releasable mechanism extending along an axis for fixing the core to the thrust element, a pivot shaft supported relative to the housing and perpendicular to the axis of rotation of the mould and disposed laterally of said axis of rotation, first support means carrying the thrust element and rotatably mounted on the shaft and second support means carrying the releasable mechanism and rotatably mounted on the shaft independently of the first support means, shifting means mounted relative to the housing and connected to the second support means for shifting the first support means about the shaft and thereby shifting the thrust element about the shaft between an operative position in which the thrust element urges the core against the mould and a withdrawn position, the second support means being rotatable on the shaft to permit the releasable mechanism to move between a first position in which it fixes the core to the thrust element when the thrust element applies the core against the mould and a second position, and means connected to the second support means for returning the releasable mechanism to said second position by rotation of said second support means, the arrangement being such that the mechanism can follow, in moving between said second position and said first position, the movement of the first support means and the thrust element, said first support means comprising a first arm rotatably mounted on the shaft, the thrust element being mounted on the first arm, and the second support means comprising a second arm freely rotatably mounted on the shaft, the releasable mechanism being mounted on the second arm.
Dependencies are inferred from the claim text.