Patent ID: 11858770
Assignee: NPS CO.,LTD
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A film feeding apparatus comprising:
a turntable including a driving member and a rotation bar having a central part shaft-coupled to a rotating shaft of the driving member to be driven to rotate around the rotating shaft and driven to rotate to repeatedly perform an operation in which the rotation bar rotates by a predetermined reference angle through the driving member and is then stopped for a predetermined reference time;
a film tray disposed in a predetermined first operation region to position one end of opposite ends of the rotation bar on the film tray in a state in which the rotation bar is stopped for the reference time and on which a plurality of films are located in multiple layers;
gripping units coupled to the opposite ends of the rotation bar, respectively, to transfer the films along a predetermined circular trajectory around the rotating shaft by the rotation bar and configured to grip the films; and
a film ejection unit disposed in a predetermined second operation region to position another end opposite to the one end of the opposite ends of the rotation bar in the film ejection unit in the state in which the rotation bar is stopped for the reference time and configured to eject the films to an outside,
wherein, in the state in which the rotation bar is stopped for the reference time, a griping unit positioned in the first operation region among the gripping units grips a film from the film tray, and a gripping unit positioned in the second operation region among the gripping units releases a film that is pre-gripped from the film tray and transfers the film to the film ejection unit,
wherein the gripping unit is configured to selectively grip an uppermost film loaded at an uppermost layer among the films loaded on the film tray,
wherein the gripping unit includes a vacuum tube disposed to face the uppermost film among the films loaded on the film tray and configured to vacuum-adsorb the uppermost film and to selectively grip the uppermost film, and a transfer member configured to raise and lower the vacuum tube,
wherein a plurality of vacuum tubes are arranged at a predetermined interval, and a plurality of transfer members are arranged to raise and lower at least one of the vacuum tubes,
wherein the film tray has an upper surface having a concave structure recessed by a predetermined curvature to load the films on an upper surface of a corresponding film tray in a state in which the films are concavely bent by the predetermined curvature, and
wherein each of the vacuum tubes includes: a first vacuum pipe to which vacuum pressure is applied; a second vacuum pipe configured to receive the vacuum pressure from the first vacuum pipe, hinged to the first vacuum pipe to surface-contact the uppermost film while hinge-rotating when coming into contact with the uppermost film, and configured to grip the uppermost film; and
an elastic member configured to elastically connect the first vacuum pipe and the second vacuum pipe to elastically restore the first vacuum pipe and the second vacuum pipe to a predetermined reference arrangement.