Suction nozzle device
AssigneeFanuc Corporation
InventorsChao PAN, Yoshio MOTOWAKI
Life of this patent
Estimating the term…
Abstract
A suction nozzle device includes a large-diameter pipe, a large-diameter nozzle, a small-diameter pipe, a small-diameter nozzle, and a support mechanism for supporting the large-diameter and small-diameter pipes so as to be movable relative to each other. As the large-diameter and the small-diameter pipes move relative to each other, the large-diameter nozzle and the small-diameter nozzle selectively protrude. A nozzle can be selected from nozzles having different diameters, and the flow rate can be varied in accordance with the selection of the nozzle.
Claims7
A suction nozzle device for vacuum-sucking a workpiece, comprising:
- a large-diameter pipe;
- a large-diameter nozzle attached to a tip of the large-diameter pipe;
- a small-diameter pipe coaxially inserted into the large-diameter pipe and having an outer diameter shorter than an inner diameter of the large-diameter pipe in order to provide a gap between the small-diameter pipe and the large-diameter pipe;
- a small-diameter nozzle attached to a tip of the small-diameter pipe;
- and
- a support mechanism for supporting the large diameter pipe and the small diameter pipe so as to be movable relative to each other, wherein
- as the large-diameter pipe and the small-diameter pipe move relative to each other, the suction nozzle device changes between a state where the small-diameter nozzle protrudes from the large-diameter nozzle and a state where the small-diameter nozzle is drawn into the large-diameter nozzle, and changes between a state where a flow path cross-sectional area of a flow path through which gas flows is set to an inner cross-sectional area of the small-diameter pipe by an outer peripheral surface of the small-diameter nozzle being brought into close contact with a rear inner edge of the large-diameter nozzle so as to close a gap between the large-diameter pipe and the small-diameter pipe, a state where the flow path cross-sectional area is set to an inner diameter cross-sectional area of the large-diameter nozzle by the outer peripheral surface of the small-diameter nozzle being separated from the rear inner edge of the large-diameter nozzle so as to open the gap between the large-diameter pipe and the small-diameter pipe, and a state where the flow path cross-sectional area is set to a value within an area range less than the inner diameter cross-sectional area of the large-diameter nozzle but greater than the inner diameter cross-sectional area of the small-diameter nozzle by the outer peripheral surface of the small-diameter nozzle approaching the rear inner edge of the large-diameter nozzle.
A suction nozzle device for vacuum-sucking a workpiece, comprising:
- a large-diameter pipe;
- a large-diameter nozzle attached to a tip of the large-diameter pipe;
- a small-diameter pipe inserted into the large-diameter pipe and having an outer diameter shorter than an inner diameter of the large-diameter pipe in order to provide a gap between the small-diameter pipe and the large-diameter pipe;
- a small-diameter nozzle attached to a tip of the small-diameter pipe;
- and
- a support mechanism for supporting the large diameter pipe and the small diameter pipe so as to be movable relative to each other, wherein
- as the large-diameter pipe and the small-diameter pipe move relative to each other, a flow path cross-sectional area of a flow path through which gas flows changes continuously between an inner diameter cross-sectional area of the small-diameter nozzle and an inner diameter cross-sectional area of the large-diameter nozzle.
A suction nozzle device for sucking a workpiece, comprising:
- a plurality of pipes having different diameters and configured to be sequentially inserted;
- a plurality of nozzles having different diameters and respectively attached to tips of the pipes;
- and
- a support mechanism for supporting the pipes so as to be movable relative to each other, wherein
- as the pipes move relative to each other, one of the nozzles selectively protrudes, and a flow path cross-sectional area is set to an inner diameter cross-sectional area of the protruding one of the nozzles.
Dependencies are inferred from the claim text.