Automatic grommeting machine
AssigneeStimpson Co., Inc.
InventorBranko Franovick
Life of this patent
Estimating the term…
Abstract
An automatic grommeting machine for high speed, large volume insertion and setting of eyelets, grommets, etc., and their mating washers, without requiring pre-punching of a hole. Dual cams are connected to a series of linkages which control the movement of a top set, a bottom set and a clamper, as well as controlling the withdrawal and insertion of grommet and washer roadway slides in synchrony with the top and bottom sets. The grommeting machine is fully automatic, i.e., the operator simply inserts a piece of material into the machine and activates the machine by pressing a single pedal to insert and set a grommet or eyelet and its corresponding washer in the material.
Claims12
An automatic grommeting machine comprising:
- a frame means;
- a first cam;
- first linking means rotatably connected to said first cam at a first end of said first linking means;
- a second cam rotatably supported above said first cam, said second cam being rotatably connected to said first linking means at an end of said first linking means opposite from said first end;
- a top set, a clamper and a cam rod, each being movable by rotation of said second cam, said cam rod having an angled lower end;
- second linking means engaging a surface of said first cam;
- a bottom set connected to said second linking means;
- a grommet supply roadway having an upper portion hingedly attached to said frame means and a lower end terminating adjacent to, and above, said clamper;
- a roadway cam fixedly secured proximal said lower end and in engagement with said top set for retracting said lower end when said top set is moved downward;
- a washer supply roadway, one end of said washer supply roadway terminating adjacent to, and slightly above, said bottom set, said washer supply roadway comprising a fixed upper portion and a slidably supported lower portion;
- and
- a lever connecting said cam rod and said slidably supported lower portion so that said slidably supported lower portion is retracted when said angled end of said cam rod is moved downward against an edge of one end of said lever opposite said slidably supported lower portion.
Dependencies are inferred from the claim text.