US 11,980,927 B2
Reciprocating linear motion mechanism for can body maker and can body maker
Tatsuya Hanafusa, Tokyo (JP); Naoyuki Yaguchi, Makinohara (JP); and Hideyuki Hiramatsu, Kikugawa (JP)
Assigned to Universal Can Corporation, Tokyo (JP); and G&PInc., Tokyo (JP)
Filed by Universal Can Corporation, Tokyo (JP); and G&P Inc., Tokyo (JP)
Filed on Mar. 30, 2021, as Appl. No. 17/217,160.
Claims priority of application No. 2020-123742 (JP), filed on Jul. 20, 2020; and application No. 2020-123743 (JP), filed on Jul. 20, 2020.
Prior Publication US 2022/0016689 A1, Jan. 20, 2022
Int. Cl. B21D 51/26 (2006.01)
CPC B21D 51/26 (2013.01) 10 Claims
OG exemplary drawing
 
1. A reciprocating linear motion mechanism for a can body maker, comprising:
a housing including an internal gear having a first central axis as a center;
a first rotating body located inside the housing and relatively rotatably joined to the housing;
a second rotating body including an external gear having a second central axis parallel to the first central axis as a center and meshing with the internal gear and relatively rotatably joined to the first rotating body;
a ram shaft joining part connected to the second rotating body and configured to be linearly moved in a reciprocating manner in a prescribed direction; and
an air supply path passing through insides of the first rotating body, the second rotating body, and the ram shaft joining part, wherein
the air supply path includes an air chamber that is arranged in the first rotating body and configured to store air therein, said air chamber being coaxially aligned with the first central axis.