Veneer cutter

Abstract

Veneer cutter, wherein the cutting is provided by a blade, the front rake face thereof being movable to pass a stationary counter blade, substantially in a perpendicular direction to the plane of the veneer. The cutter includes two blades in a common cutting movement and arranged at a distance from each other in the feed direction of the veneer. The cutting blades are located with their front rake faces facing away from each other, and the first blade in the feed direction is positioned at a higher elevation from a common plane of the counter blades than the second blade.

Description

The construction and way of operation of the cutter according to the invention will be described in the following, with respect to the enclosed drawing, wherein

FIG. 1 is a principle diagram of trimming of a defective veneer sheet,

FIG. 2 illustrates one structural embodiment of a veneer cutter in one operational situation,

FIG. 3 illustrates the veneer cutter of FIG. 2, when cutting the front edge of a veneer sheet,

FIG. 4 illustrates a veneer cutter of FIG. 2 in an operational situation, where a good veneer sheet is transported through the cutter.

FIG. 5 illustrates the veneer cutter of FIG. 2, when cutting the rear edge of a veneer sheet, and

FIG. 6 illustrates the veneer cutter, when cutting a defective portion of a veneer sheet.

Claims

1. A cutter for veneer fed in an advancing direction along a plane through the cutter, the cutter having in a first position in the advancing direction a first cutting blade and in a following position in the advancing direction a second cutting blade, means to set the blades to a common reciprocating movement essentially perpendicularly to the veneer for a cutting stroke, the first and second cutting blades having a one-sided beveled cutting edge leaving an essentially planar front rake in the respective cutting blade, a stationary counter blade on said plane for each of the cutting blades in shearing contact with the cutting edge and the front rake of the respective cutting blade, the first cutting blade and the second cutting blade leaving a mutual distance in the advancing direction, wherein the first and the second cutting blades are arranged with their front rake faces facing away from each other, and the first blade is arranged to reach a higher elevation from the veneer to be cut than the second cutting blade.

2. A cutter in accordance with claim 1, wherein between the counter blades there is a free space for removing scrap veneer pieces.

3. A cutter in accordance with claim 1, wherein the first and second cutting blades have on the front rake a pressing means movable on the front rake of the blade, and the cutter includes actuators for pushing the pressing means towards the respective counter blade, but allowing the cutting stroke.

4. A cutter in accordance with claim 2, wherein the first and second cutting blades have on the front rake a pressing means movable on the front rake of the blade, and the cutter includes actuators for pushing the pressing means towards the respective counter blade, but allowing the cutting stroke.