Patent ID: 6026885
Filing Date: 2000-02-22
Classification: H05K,Y10S,Y10T

Abstract:
An electronic component feeder comprising: a wheel (47) for conveying a holder tape (3) of an electronic component carrying tape (A) by intermittent rotation in one direction and for feeding electronic components (1) stored in their respective storage recesses (2) on the holder tape (3) in sequence to a component pick up position; a reel (42) for taking up a top tape (4) for peeling off the top tape (4) from the holder tape (3) of the electronic component carrying tape (A); a tape guide (35) for receiving and guiding the electronic component carrying tape (A); a shutter (34) which is supported and guided by the tape guide (35) and moves forward and backward in such a way that the shutter (34) covers the electronic components (1) from above stored in the storage recesses (2) of the holder tape (3) after the top tape (4) has been peeled off and clears above the component pick-up position for allowing the electronic component (1) to be picked up only when the shutter (34) is at its retreated position; a slit (51) provided integral with the shutter (34) for passing and directing the top tape (4) peeled off from the holder tape (3) to the reel (42); a feed lever (29) which, on receipt of a driving force from an electronic component mounting apparatus, repeats intermittent reciprocating rotation consisting of forward turning motion, pause, and backward turning motion about a pivot center (41) which is identical with that of the reel (42); a power transmitting means (30, 46) for converting the intermittent reciprocating rotation of the feed lever (29) to intermittent one-directional turning movements of the wheel (47), in such a way that the wheel (47) is turned only when the feed lever (29) turns backward to advance the holder tape (3); a power transmitting means (30, 46, 49) for converting the intermittent reciprocating rotation of the feed lever (29) to intermittent forward and backward movements of the shutter (34), in such a way that the shutter (34) is moved backward when the feed lever (29) turns forward and the shutter (34) is moved forward when the feed lever (29) turns backward; a take-up lever (40) which rotates forward and backward about the pivot center (41) which is identical with that of the reel (42); a spring (39) for giving a bias to cause the take-up lever (40) to rotate in the tape take-up direction; a take-up lever driving member (38) driven by the feed lever (29) for moving detachably to and from the take-up lever (40) so that the take-up lever driving member (38) moves away from the take-up lever (40) when the feed lever (29) turns forward so as to allow the take-up lever (40) to rotate by the urging force of the spring (39) in the tape take-up direction and that when the feed lever (29) turns backward, the take-up lever driving member (38) approaches and contacts the take-up lever (40) and further causes the take-up lever (40) to rotate in a direction opposite to the tape take-up direction; and a one directional power transmitting means for transmitting the rotation in the tape take-up direction of the take-up lever (40) to the reel (42) so as to cause the reel (42) to rotate in the tape take-up direction while not transmitting the rotation in an opposite direction of the take-up lever (40) to the reel (42) so as to allow the take-up lever (40) to rotate freely.