Packaging processing apparatus in a packaging machine

A packaging processing apparatus used in a packaging machine, wherein said packaging machine comprises:

• a rotating body that is attached to a rotating shaft connected to a driving means, said rotating body being rotated at a constant speed on a horizontal plane, and
• a plurality of container holding means that, upon rotation of said rotating body, are moved continuously at a constant speed and a uniform spacing along a predetermined-shape traveling path around a circumference of said rotating body;
• and
• specified packaging processing operations are performed, by a plurality of packaging processing means, on containers during a movement of respective container holding means along said predetermined-shape traveling path, said packaging processing means being arranged in a form of a circular arc so as to correspond to said container holding means at a same pitch as said containers held by said container holding means and performing a synchronous movement for a specified range at a same speed as said containers held by said container holding means, and wherein
• said packaging processing apparatus is comprised of:
• a pivot member which is disposed above said rotating body, said pivot member being concentric with said rotating shaft and being connected to a driving means so that said pivot member performs a reciprocating pivot motion on a horizontal plane,
• a rising-and-lowering assembly which is disposed on said pivot member so that said rising-and-lowering assembly is freely raised and lowered and pivoted together with said pivot member,
• a circular first raising-and-lowering cam which is disposed concentrically with said rotating body and rotated together with said rotating body,
• a circular-arc-shaped second raising-and-lowering cam which is provided concentrically with said rotating body above said rotating body,
• a rolling member which is attached to said rising-and-lowering assembly and rolls over cam surfaces of said first and second raising-and-lowering cams so that said rising-and-lowering assembly is raised and lowered at a specified timing, and
• a plurality of said packaging processing means which are disposed on said rising-and-lowering assembly and perform a reciprocating motion as said pivot member pivots;
• and
• said rising-and-lowering assembly is subjected to an action of said second raising-and-lowering cam during an advancing motion of said pivot member and is subjected to an action of said first raising-and-lowering cam during a return motion of said pivot member.