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US 11,571,835 B2Granted
Transporting device and kneading machine with rolling element
AssigneeSeiko Epson Corporation
InventorsTakashi Hiraiwa, Makoto Omura
Life of this patent
Estimating the term…
Abstract
A hopper charged with a powder material, a screw arranged below the hopper and exposed at a supply port formed at the bottom of the hopper, and a rolling element in contact with the screw at the supply port are provided. The rolling element is larger than a space between end portions of the supply port and a screw groove of the screw.
Claims10
A transporting device comprising:
- a hopper charged with a powder material;
- a pair of first and second screws arranged below the hopper and exposed at a supply port formed at a bottom of the hopper, each of the first and second screws including a screw shaft and blades, the screw shaft extending an axial direction of the screw shaft, the blades being disposed an outer peripheral surface of the screw shaft, the screw shaft of the first screw being spaced apart from the screw shaft of the second screw by at least a first distance as viewed in the axial direction, the first distance being a minimum distance between the outer peripheral surface of the screw shaft of the first screw and the outer peripheral surface of the screw shaft of the second screw as viewed in the axial direction;
- and
- a rolling element in contact with at least one of the first and second screws at the supply port, wherein
- the rolling element is larger than a space between an end portion of the supply port and a groove of each of the first and second screws, and
- a diameter of the rolling element is greater than the first distance as viewed in the axial direction.
3 more elements
A kneading machine for kneading by transporting a powder material by using a transporting device, the kneading machine comprising:
- the transporting device including
- a hopper charged with the powder material,
- a pair of first and second screws arranged below the hopper and exposed at a supply port opening at a bottom of the hopper, each of the first and second screws including a screw shaft and blades, the screw shaft extending an axial direction of the screw shaft, the blades being disposed an outer peripheral surface of the screw shaft, the screw shaft of the first screw being spaced apart from the screw shaft of the second screw by at least a first distance as viewed in the axial direction, the first distance being a minimum distance between the outer peripheral surface of the screw shaft of the first screw and the outer peripheral surface of the screw shaft of the second screw as viewed in the axial direction, and
- a rolling element in contact with at least one of the first and second screws at the supply port, wherein
- the rolling element is larger than a space between an end portion of the supply port and a groove of each of the first and second screws, and
- a diameter of the rolling element is greater than the first distance as viewed in the axial direction.
3 more elements
Dependencies are inferred from the claim text.