TH33613A - Methods and equipment for dispensing molten metal? (Into the template) - Google Patents

Abstract

Method and equipment for dispensing molten metal into the template. Where metal at The melt is supplied to the molding gap of the template, at least through a large portion of the area. Ring at a location separated from the center of the template's molding gap. To make Shortened cycle times and improved product quality simultaneously

Claims (13)

1. The process of filling the mold with molten metal involves feeding the molten metal into a position outside the center of the annular channel, which is connected to the forming cavity of the mold, at least above the larger circumference. Molten metal flows from this annular channel into the forming cavity. In the final cycle of this filling process, the feeding of molten metal into the annular channel is interrupted by at least one piston, which can be moved into the annular channel. This piston forces the molten metal to flow out of the annular channel into the forming cavity. 2. A device for filling the mold with molten metal, having at least one filling port. This filling port is arranged radially outwards from the center, relative to the forming cavity of the mold, and opens into an annular channel. This annular channel is independently releaseable across the forming cavity of the mold above at least one larger circumference, in which at least one piston is concealed, allowing it to slide into the annular channel. Once in its released position, it closes at least one filling port. 3. Device under claim 2: When the piston is moved into the annular channel, it forces the molten metal out of the annular channel into the forming cavity. 4. Devices as per claim 2 or 3, where the annular channels are arranged on the outer circumference of the forming blank and connected to the outer frame of the forming blank with the same shape. 5. An apparatus under claims 2 through 4 in which the annular channel is fully released along its entire perimeter into the forming space of the mold. 6. Any device under claims 2 through 5 where the piston is a sealing material along the entire circumference of the annular cavity and has a cross-sectional area corresponding to the cross-sectional area of the annular cavity. 7. Any device under claims 2 through 6 in which the piston is subdivided by at least one radial joint. 8. Any device under claims 2 through 7 in which the piston is subdivided into at least two piston carcasses which are axially aligned, relative to each other and capable of being moved simultaneously relative to each other. 9. Any device under claims 2 through 8 in which a fill opening containing at least one wide-opening (delta-shaped) opening is located inside the annular opening and can be opened in the direction of the circumference of the annular opening. 10. Any device under claims 2 through 9 in which the annular channel has an annular shape. 11. Any device under claims 2 through 9 in which the annular channel has a polygonal annular shape. 12. Equipment under claim number 10 for the manufacture of balanced, moving cast metal devices, especially lightweight alloy wheels for powertrain vehicles, where the annular bore and piston have the shape of a straight cylindrical cylinder. 13. Equipment under claim 12 for the manufacture of lightweight alloy wheels for vehicles, where the annular channel is released into a forming blank that creates a pointed, protruding structure at the outer edge.