Machine for cutting stacked sheet material and the like

An apparatus for cutting stacked sheet material and the like, comprising:

• a frame supporting said apparatus;
• first and second guideways having first and second fixed guideway members mounted on said frame in a laterally spaced apart relationship, and first and second movable guiding carriages movably supported by said first and second fixed guideway members and oriented to shift vertically;
• at least one of said first and second movable guiding carriages includes a mounting hole therein;
• a knife holder connected with said first and second movable guiding carriages adjacent opposite sides thereof, and configured to be shifted vertically;
• an actuator operably connected between said frame and said knife holder for selectively shifting said knife holder vertically;
• a knife connected with said knife holder and having an edge shaped for cutting the sheet material when said knife holder is shifted vertically;
• and
• a pivot bearing mounted in said mounting hole, rotatably connecting said knife holder with said one of said first and second movable guiding carriages to facilitate cutting the sheet material, and including roller cages disposed between said fixed guideway members and said movable guideway members.

An apparatus for cutting stacked sheet material and the like, comprising:

• a frame supporting said apparatus;
• first and second guideways having first and second fixed guideway members mounted on said frame in a laterally spaced apart relationship, and first and second movable guiding carriages movably supported by said first and second fixed guideway members and oriented to shift vertically;
• at least one of said first and second movable guiding carriages includes a mounting hole therein;
• a knife holder connected with said first and second movable guiding carriages adjacent opposite sides thereof, and configured to be shifted vertically;
• an actuator operably connected between said frame and said knife holder for selectively shifting said knife holder vertically;
• a knife connected with said knife holder and having an edge shaped for cutting the sheet material when said knife holder is shifted vertically;
• and
• a pivot bearing mounted in said mounting hole, rotatably connecting said knife holder with said one of said first and second movable guiding carriages to facilitate cutting the sheet material, and including a rotary roller guide.

An apparatus for cutting stacked sheet material and the like, comprising:

• a frame supporting said apparatus;
• first and second guideways having first and second fixed guideway members mounted on said frame in a laterally spaced apart relationship, and first and second movable guiding carriages movably supported by said first and second fixed guideway members and oriented to shift vertically;
• at least one of said first and second movable guiding carriages includes a mounting hole therein;
• a knife holder connected with said first and second movable guiding carriages adjacent opposite sides thereof, and configured to be shifted vertically;
• an actuator operably connected between said frame and said knife holder for selectively shifting said knife holder vertically;
• a knife connected with said knife holder and having an edge shaped for cutting the sheet material when said knife holder is shifted vertically;
• and
• a pivot bearing mounted in said mounting hole, rotatably connecting said knife holder with said one of said first and second movable guiding carriages to facilitate cutting the sheet material, and including an eccentric tappet for adjusting said pivot bearing relative to said knife holder.