Device and method for producing metal slugs

Patent metadata

Field	Value
Publication number	US-11097336-B2
Application number	US-201816631650-A
Country	US
Kind code	B2
Filing date	Jul 9, 2018
Priority date	Jul 17, 2017
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A device and method for producing metal slugs, in which: a movable support has a plurality of cavities separated by partition walls, such that the cavities travel over a path, a feeding means is positioned above a location on said path and is capable of forming a stream of molten metal, flowing under the effect of gravity, such that, during the continuous movement of the movable support, the continuous stream of molten metal from the feeding means is divided or fragmented into slugs formed successively in said cavities, under the effect of said partition walls.

First claim

The invention claimed is:

1. A device for producing metal slugs, comprising:
a movable support having a plurality of cavities separated by partition walls, such that the cavities travel over a path, the movable support comprising a rotating plate, said cavities being formed on an annular zone of the rotating plate, and
a feeding element positioned above a location of said path and capable of forming a stream of molten metal, flowing under the effect of gravity, such that during the continuous movement of the movable support, the continuous stream of molten metal from the feeding element is divided or fragmented into slugs formed successively in said cavities, under the effect of said partition walls;
wherein the feeding element comprises a melting pot capable of receiving the metal material and provided with at least one lower extrusion orifice, a heating element configured to heat the metal material contained in the melting pot and a pressure element configured to act on the surface of the metal contained in the melting pot, and
wherein the rotating plate comprises at least one peripheral annular collar having an upper face capable of receiving the slugs extracted from the cavities.

2. The device according to claim 1 , comprising a removal element capable of removing the metal slugs formed from the cavities.

3. The device according to claim 2 , in which said removal element comprises pushbuttons mounted on the rotating plate and a cam for actuating said pushbuttons.

4. The device according to claim 2 , in which said removal element comprises at least one nozzle capable of generating a gas jet.

5. The device according to claim 2 , in which said removal element comprises a diverting slat.

6. The device according to claim 1 , further comprising a removing slugs element arranged on said at least one collar.

7. The device according to claim 1 , in which said cavities each have a bottom and are internally delimited by a common annular partition protruding upwards and circumferentially through the partition walls which separate them, these partition walls extending in the direction of the axis of rotation upwards from the bottoms and radially outwards from the common annular partition, such that the cavities are open upwards and radially outwards, opposite the common annular partition and are of equivalent shapes,
and comprising a removal element capable of removing from the cavities, radially outwards, the metal slugs formed.

8. The device according to claim 1 , in which
said cavities each have a bottom and are internally delimited by a common annular partition protruding upwards and circumferentially through the partition walls which separate them
the bottoms of the cavities extend into one same approximately radial plane, and
the upper edges of the partition walls extend in one same radial plane and the partition walls are distributed along equal circumferential steps.

9. The device according to claim 1 , in which said cavities each have a bottom and are internally delimited by a common annular partition protruding upwards and circumferentially through the partition walls which separate them, and the bottoms of the cavities are inclined in the direction of the common annular partition.

10. The device according to claim 1 , in which said pressure element comprises a piston.

11. The device according to claim 1 , in which said pressure element comprises a pressurised gas.

12. The device according to claim 1 , comprising a cooling element of said movable support.

13. A method for producing metal slugs comprising:
forming a continuous stream of molten metal material, through at least one lower extrusion orifice of a melting pot containing the metal material and under the effect of a pressure element acting on the surface of the metal contained in the melting pot; and
letting the stream of molten metal flow, under the effect of gravity, above a path over which cavities of a movable support continuously travel, separated by partition walls, such that the stream of molten metal is divided or segmented in slugs formed successively in said cavities, under the effect of said partition walls; and
extracting the slugs from the cavities in an extraction location situated before the slugs reach the location where the continuous stream of molten metal material is formed, for the slugs to be positioned on at least one peripheral annular collar having an upper face capable of receiving the slugs extracted from the cavities.

Assignees

• Univ Grenoble Alpes
• Inst Polytechnique Grenoble

Inventors

• Gravier Sébastien
• Kapelski Georges

Classifications

• B22D29/00

  Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots {(B22D13/10, B22D11/124, B22D17/00 take precedence)} · CPC title

• B22D11/064

  for supplying molten metal (supplying molten metal to open-ended moulds B22D11/10) · CPC title

• B22D23/00

  Casting processes not provided for in groups B22D1/00 - B22D21/00 (making metallic powder by casting B22F9/08; alumino-thermic welding B23K23/00; remelting metals C22B9/16) · CPC title

• B22D39/06

  having means for controlling the amount of molten metal by controlling the pressure above the molten metal · CPC title

• B22D5/02 Primary

  with rotary casting tables · CPC title