Abstract: A capping machine includes a gripper having a pair of gripping arms provided on an outer peripheral portion of a rotating body and configured to grip a cylindrical portion of a vessel, an opening and closing device configured to open and close the gripping arms, and a capping head liftably and rotatably provided on the rotating body. The gripping arms are arranged symmetrically with respect to a radius of the rotating body. The gripper has a protrusion for preventing the vessel from rotating on a vessel gripping surface of the gripping arms. The gripping arms have outer and inner gripping surfaces which are connected in a V shape. The protrusion is formed only on the inner gripping surface of a right gripping arm. A cap held by the capping head is screwed onto the vessel while sticking the protrusion into the cylindrical portion.

Abstract: A capping machine includes a gripper having a pair of gripping arms provided on an outer peripheral portion of a rotating body and configured to grip a cylindrical portion of a vessel, an opening and closing device configured to open and close the gripping arms, and a capping head liftably and rotatably provided on the rotating body. The gripping arms are arranged symmetrically with respect to a radius of the rotating body. The gripper has a protrusion for preventing the vessel from rotating on a vessel gripping surface of the gripping arms. The gripping arms have outer and inner gripping surfaces which are connected in a V shape. The protrusion is formed only on the inner gripping surface of a right gripping arm. A cap held by the capping head is screwed onto the vessel while sticking the protrusion into the cylindrical portion.

Abstract: An electron beam cap-sterilizer radiates an electron beam onto caps while the caps are continuously conveyed. The caps are conveyed in the restricting conveying section while the movements of the caps are restricted, so that the caps roll down freely and separately from each other in the free conveying section. The electron beam radiating device emits electron beams onto the inside of the caps in the lateral direction while the caps are conveyed in the free conveying section. A deflecting device is provided in the free conveying section. The deflecting device is located at the opposite side of the electron beam radiating device to deflect the electron beams emitted by the electron beam radiating device onto the outside of the caps.

Abstract: A gripper includes grip members which are mounted on a first rotary shaft and a second rotary shaft, respectively, so as to be opened and closed. An engaging pawl is formed on an upper surface of the grip member. Both shafts are elevatable in an integral manner. A receptacle member is disposed below an exit star-wheel, and is arranged to rotate integrally with the star-wheel. The gripper is located below the flange of the vessel when receiving the vessel. Accordingly, the engaging pawl cannot contact the flange. When the vessel is depressed by the capping head during a capping operation, the engaging pawl engages the vessel. When the vessel is discharged, the vessel remains suspended above the receptacle member, and the gripper then descends to place the vessel on the receptacle member and to disengage the engaging pawl of the gripper. Accordingly, there is no scarring of the vessel when the vessel is introduced into and discharged from the screw capper, and a stable conveyance of vessels is enabled.

Abstract: A gripper 12 comprises grip members 12a, 12b which are mounted on a first rotary shaft 24 and a second rotary shaft 26, respectably, so as to be opened and closed. An engaging pawl 12c is formed on an upper surface of the grip member. The both shafts 24, 26 are elevatable in an integral manner. A receptacle member 70 is disposed below an exit star-wheel 22, and is arranged to rotate integrally with the star-wheel. The gripper is located below the flange 16a of the vessel 16 when receiving the vessel, and accordingly, the engaging pawl cannot contact the flange. When the vessel is depressed by the capping head 20 during a capping operation, the engaging pawl engages the vessel. When the vessel is discharged, the vessel remains suspended above the receptacle member 70, and the gripper then descends to place the vessel on the receptacle member and to disengage the engaging pawl of the gripper.