| 摘要 |
A method and an apparatus for inverting selected ones of a plurality of PTPs being conveyed very easily and simply are disclosed. An inverting device 20 is disposed above a conveying passage along which a plurality of PTPs 1 are conveyed in a standing position. The inverting device 20 has rotary units 22 each provided with a plurality of pairs of pinching fingers 13. The inverting device 20 is reciprocated in directions parallel to the conveying passage by a longitudinal shifting mechanism 40 and is moved vertically in directions perpendicular to the conveying passage by a lifting mechanism 30. While the inverting device 20 is advanced by the longitudinal shifting mechanism 40 in synchronism with the movement of the PTPs 1, the pairs of pinching fingers 13 are lowered to the conveying passage by the lifting mechanism 30, are driven to pinch the selected PTPs 1, and are raised from the conveying passage, the rotary units 22 are turned through an angle of 180° to invert the PTPs pinched between the pairs of pinching fingers 13, and then the pairs of pinching fingers 13 are lowered again by the lifting mechanism 30, are driven to release the inverted PTPs 1, and are raised from the conveying passage.
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