| 摘要 |
A bag opening device comprising a pair of suction heads adapted to engage a portion of a bag from one side thereof and to twist the bag to open the mouth thereof when the heads are moved in opposite directions. The suction heads are movably mounted on the ends of a pair of suction arms and are positioned to engage a cam member to effect the opposite movement of the heads in response to predetermined movement of the suction arms. The suction heads may be mounted on the suction arms for rotatable or reciprocatory movement relation thereto.
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