Roll strapping apparatus

Apparatus for applying a flexible strap in a predetermined position on an article, such as a roll of paper product, said apparatus comprising:

• a frame;
• a strap guide member mounted on said frame for substantially linear movement to selected positions for applying a strap to an article in a first predetermined position on said article and a second predetermined position on said article, said guide member including means for guiding and supporting a flexible strap for application to said article in said selected positions;
• bearing means for supporting said guide member on said frame for substantial linear movement of said guide member in opposite directions with respect to said frame for applying a first strap to said article in a first predetermined position and for applying a second strap to said article in a second predetermined position;
• and
• actuator means for moving said guide member from an at rest position to a first position for applying said first strap to said first predetermined position on said article and then moving said guide member to a second position for applying said second strap in said second predetermined position on said article, said actuator means comprising plural tandem pressure fluid cylinder and piston actuators interconnecting said guide member with said frame and operable to move said guide member between said at rest position, said first position and said second position.

Apparatus for applying a flexible strap in a predetermined position on an article, such as a roll of paper product, said apparatus comprising:

• a frame;
• a strap guide member comprising a plate having a substantially flat surface thereon and mounted on said frame for substantially linear movement to a position for applying said strap to an article in a predetermined position on said article, said guide member including means for guiding and supporting said strap for application to said article;
• bearing means for supporting said guide member on said frame and for allowing movement of said guide member to a position to be aligned with a surface on said article to be strapped so that said strap is placed in a predetermined plane with respect to said surface;
• actuator means for moving said guide member to a position for applying said strap in said predetermined position on said article;
• and
• plural guide member positioning devices supported on said substantially flat surface independent of each other for positioning said guide member to lie in a predetermined plane in relation to a surface on said article to be strapped, said positioning devices being spaced apart about a central axis of an opening formed in said plate for receiving said article in such a way that upon engagement of said positioning devices with said article said guide member is caused to lie in said predetermined plane substantially parallel to the plane of said surface on said article engaged by said positioning devices, in response to movement of said guide member by said actuator means.