US 11,738,980 B2
Capping machine
Satoshi Masumoto, Kanazawa (JP); Hajime Matsui, Kanazawa (JP); Yasuto Nishide, Kanazawa (JP); Hiroyoshi Yamada, Kanazawa (JP); Hiroaki Kitamoto, Kanazawa (JP); and Masatoshi Nozaki, Kanazawa (JP)
Assigned to SHIBUYA CORPORATION, Kanazawa (JP)
Filed by SHIBUYA CORPORATION, Kanazawa (JP)
Filed on May 11, 2021, as Appl. No. 17/316,729.
Claims priority of application No. 2020-083103 (JP), filed on May 11, 2020.
Prior Publication US 2021/0347620 A1, Nov. 11, 2021
Int. Cl. B67B 3/20 (2006.01)
CPC B67B 3/206 (2013.01) [B67B 3/2066 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A capping machine comprising:
a gripper having a right gripping arm and a left gripping arm provided on an outer peripheral portion of a rotating body and configured to grip a cylindrical portion on a lower side of a flange portion of a vessel, the rotating body being rotatable around a center of the rotating body;
the right gripping arm being provided on a right side with respect to the left gripping arm when viewed from the center of the rotating body;
an opening and closing device configured to open and close the right and left gripping arms;
a capping head liftably and rotatably provided on the rotating body;
the right and left gripping arms being arranged symmetrically with respect to a radius of the rotating body, each of the right and left gripping arms being rotatable around a respective axis;
the right gripping arm having a gripping surface with a V shape viewed along the respective axis, the gripping surface of the right gripping arm having an outer gripping surface and an inner gripping surface which is connected to the outer gripping surface of the right gripping arm to form the V shape of the right gripping arm, the inner gripping surface of the right gripping arm being provided between the outer gripping surface of the right gripping arm and the axis of the right gripping arm;
the left gripping arm having a gripping surface with a V shape viewed along the respective axis, the gripping surface of the left gripping arm having an outer gripping surface and an inner gripping surface which is connected to the outer gripping surface of the left gripping arm to form the V shape of the left gripping arm, the inner gripping surface of the left gripping arm being provided between the outer gripping surface of the left gripping arm and the axis of the left gripping arm;
only the inner gripping surface of the right gripping arm among the inner and outer gripping surfaces of the right gripping arm and the inner and outer gripping surfaces of the left gripping arm including at least one protrusion to prevent the vessel from rotating; and
the capping head holding a cap which is configured to be screwed onto the vessel while sticking the protrusion onto the cylindrical portion.