A method for cutting or trimming a hollow object having one or more relatively thin walls, the method including an oscillation step that reduces wall deformation at the site of the initial cut to produce a relatively straight leading edge on the object, in combination with a further cutting step that does not include oscillation of a cutting blade. A second oscillation step can be performed after the non-oscillation step that leads to the separation of the object into two pieces and also produces a relatively straight trailing edge. A device for performing the cutting methods is disclosed.

A cutting device for cutting tire components. The cutting device includes an upper cutting member and a lower cutting member. The upper cutting member is arranged to be moved in a cutting plane along the lower cutting member to cut the tire component in cooperation with the lower cutting member along a cutting line. The upper cutting member includes an upper knife with an upper cutting edge that is convexly arcuate in the cutting plane with respect to the lower cutting member. The upper cutting member is arranged to be moved with the arcuate upper cutting edge thereof along the lower cutting member in a rocking motion in the cutting plane. The arcuate upper cutting edge has a radius and a rotation center for the rocking motion at the origin of the radius, wherein the rotation center is located outside the upper cutting member.

A cutting device for cutting tire components. The cutting device includes an upper cutting member and a lower cutting member. The upper cutting member is arranged to be moved in a cutting plane along the lower cutting member to cut the tire component in cooperation with the lower cutting member along a cutting line. The upper cutting member includes an upper knife with an upper cutting edge that is convexly arcuate in the cutting plane with respect to the lower cutting member. The upper cutting member is arranged to be moved with the arcuate upper cutting edge thereof along the lower cutting member in a rocking motion in the cutting plane. The arcuate upper cutting edge has a radius and a rotation center for the rocking motion at the origin of the radius, wherein the rotation center is located outside the upper cutting member.

A cutting assembly for cutting an extruded edible material includes an extrusion assembly having a food extrusion port that extrudes an edible material in an extrusion direction. A cutter frame having a cutting edge is positioned proximate the food extrusion port. The cutting edge moves through a cutting region proximate the extrusion port in a cutting motion. First and second servo motors are operably coupled to the cutter frame, wherein the first servo motor operates the cutting edge to define a first component of the cutting motion perpendicular to the extrusion direction. The second servo motor operates the cutting edge to define a second component of the cutting motion generally parallel with the extrusion direction. The first and second servo motors combine the first and second components to define a cutting path and a return path of the cutting edge through the cutting region.

A cutting assembly for cutting an extruded edible material includes an extrusion assembly having a food extrusion port that extrudes an edible material in an extrusion direction. A cutter frame having a cutting edge is positioned proximate the food extrusion port. The cutting edge moves through a cutting region proximate the extrusion port in a cutting motion. First and second servo motors are operably coupled to the cutter frame, wherein the first servo motor operates the cutting edge to define a first component of the cutting motion perpendicular to the extrusion direction. The second servo motor operates the cutting edge to define a second component of the cutting motion generally parallel with the extrusion direction. The first and second servo motors combine the first and second components to define a cutting path and a return path of the cutting edge through the cutting region.

A method for cutting or trimming a hollow object having one or more relatively thin walls, the method including an oscillation step that reduces wall deformation at the site of the initial cut to produce a relatively straight leading edge on the object, in combination with a further cutting step that does not include oscillation of a cutting blade. A second oscillation step can be performed after the non-oscillation step that leads to the separation of the object into two pieces and also produces a relatively straight trailing edge. A device for performing the cutting methods is disclosed.

Upon cutting a corner of a plastic bag, the cut-out portion is prevented from attaching to the plastic bag. A plastic film (1) is trimmed by a trimming cutter (7) to form a selvage (8). Every time that the plastic film (1) is intermittently fed, the trimming cutter (7) is moved by a trimming cutter moving mechanism, so that a corner of the plastic bag is cut by the trimming cutter (7) and the cut-out portion (11) is continued from the selvage (8).

A disposable carving blade contains a central hole defined at a central position thereof, a first central line passing through the central position thereof, a right cutting rim formed on a first peripheral side thereof and a left cutting rim formed on a second peripheral side thereof. The right cutting rim is connected with the left cutting rim to form a V-shaped portion, and the V-shaped portion includes a cutting edge defined on a distal end thereof. An intersection point of the right cutting rim on the first peripheral side of the disposable carving blade and the left cutting rim on the second peripheral side of the disposable carving blade is adjacent to the first central line, and a distance between the intersection point and the first central line is a first eccentric value.

A disposable carving blade contains a central hole defined at a central position thereof, a first central line passing through the central position thereof, a right cutting rim formed on a first peripheral side thereof and a left cutting rim formed on a second peripheral side thereof. The right cutting rim is connected with the left cutting rim to form a V-shaped portion, and the V-shaped portion includes a cutting edge defined on a distal end thereof. An intersection point of the right cutting rim on the first peripheral side of the disposable carving blade and the left cutting rim on the second peripheral side of the disposable carving blade is adjacent to the first central line, and a distance between the intersection point and the first central line is a first eccentric value.

A plane cutting machine for soft materials may include a worktable, a feeding device, a XY plane cutting system, and a computer. The feeding device is located above the worktable. The XY plane cutting system is located above the feeding device. The worktable is divided into a first worktable and a second worktable. The feeding device comprises a first feeding device and a second feeding device disposed above the first worktable and the second worktable, respectively. A first camera and a second camera are provided above the first feeding device and the second feeding device, respectively. The first camera and the second camera are connected with an input end of the computer via a data line. The XY plane cutting system is connected with an output end of the computer via a data line.