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AssigneesToyo Seikan Kaisha, Ltd., Shibuya Kogyo Co., Ltd.
InventorsNobuyuki Takakusaki, Tomoaki Kaneko, Toshiaki Naka, Seiichi Uchikata, Takashi Miyazaki
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A capping apparatus includes a capping head 3 which is provided with a rotatable spindle. A plurality of permanent magnets 51 are embedded around the entire outer periphery at the upper end of the spindle, with adjacent permanent magnets 51 presenting magnetic poles of different polarities. An arcuate rotation imparting member 53 is fixedly mounted and includes a plurality of permanent magnets 55 which are disposed along a locus of travel of the permanent magnets 51 on the capping head 3, with adjacent permanent magnets 55 presenting magnetic poles of different polarities. As the capping head 3 moves through a threadable engaging zone C in a direction indicated by an arrow, coaction between the permanent magnets 51 and 55 causes the capping head 3 to rotate clockwise, thereby causing a cap 12 to be threadably engaged with a container 4. The permanent magnets 51 and 55 form together a drive source which is free from a sliding movement, thus preventing a occurrence of abraded powder and avoiding a contamination of the environment of a working area.
A capping apparatus comprising a capping head disposed in a rotatable manner, and a rotation imparting member for causing the capping head to rotate, the rotation imparting member including a plurality of magnets M1 which are arranged to present alternate magnetic poles of opposite polarities, the capping head including a holder detachably holding a cap, a spindle connected to the holder and disposed in a rotatable manner, and a plurality of magnets M2 disposed integrally with and along the circumference of the spindle and presenting alternate magnetic poles of opposite polarities, a relative movement between the capping head and the rotation imparting member being effective to cause the spindle to be rotated by the cooperation between the magnets M1 and M2 to threadably engage the cap with the container.
Dependencies are inferred from the claim text.