Abstract: Disclosed is a filament winding apparatus comprising a winding mechanism having a pair of arms for winding traversed filamentary yarns impregnated with a resin onto a plurality of mandrels, respectively, and a mandrel retaining mechanism having mandrel receiving portions by a number of at least two times of the number of the mandrels to be set on the arms of the winding mechanism. The arms are swung between a winding position and a mandrel exchange position of the mandrel retaining mechanism. The retaining mechanism is a little moved when the mandrels are exchanged. A plurality of mandrels can be easily and efficiently exchanged at the same time without a particular device. The number of the mandrels for simultaneous filament winding can be increased and a high productivity can be obtained. Further, this apparatus can be realized at a relatively low cost.

Abstract: A printing plate (50) is provided with a plurality of positioning holes (50d) at the head portion (50a) on the basis of at least two cross sides (51a, 51b) of the printing plate (50). The printing plate (50) is delivered towards the plate cylinder (3) by the predetermined distance on the basis of two cross sides (51a, 51b) in relation to the rotation of the plate cylinder (3) so that each positioning holes (50d) can be engaged with the corresponding positioning pins (315) of the plate cylinder (3). This allows the printing plate (50) to be automatically and accurately mounted onto the designated position of the plate cylinder (3).