Plate reduction press apparatus and methods

A plate reduction press apparatus comprising:

• a die arranged above or below a slab;
• sliders for moving the die up, down, and backwards and forwards;
• a driving device for driving the sliders;
• and
• a slab supporting member arranged opposite the die above or below the slab, in which
• each one of the sliders is comprised of a main unit with a circular hole with a center line in the lateral direction of the slab, a first shaft engaged with the circular hole, and a crank comprised of a second shaft with a diameter smaller than the diameter of the first shaft and a center line offset from the center line of the first shaft, and the second shaft is rotated and driven by the driving device, in which a plurality of circular holes and a plurality of cranks arranged in the sliders are arranged in a row in the transfer direction of the slab, and constructed in such a manner that each crank produces pressing force.

A plate reduction press apparatus comprising:

• dies arranged above and below a material to be pressed;
• crank devices that press each of the dies;
• and
• pinch rolls that transfer the material to be pressed, in which
• when the crank devices are pressing the material to be pressed through the dies, the pinch rolls rotate in such a manner that a peripheral speed of the pinch rolls is made equal to the combination of a horizontal speed of the dies and an elongation speed of the material to be pressed, added or subtracted, and transfers the material to be pressed, and
• when the press machine is not pressing, a speed of feeding the material to be pressed is adjusted in such a manner that during one cycle, the material to be pressed is moved by a predetermined distance L and the distance L is not greater than a reduction length L0 of the dies in the direction of flow of the material to be pressed, and
• a pressing force of the pinch rolls during the pressing period is made smaller than a pressing force of the pinch rolls during the non-pressing period.

A plate reduction press apparatus comprising:

• dies arranged above and below a slab;
• sliders provided for each of the dies so that the dies can be moved up, down, and backwards and forwards with a swinging motion;
• and
• a driving device for driving the sliders, in which each one of the sliders is comprised of a main unit with a circular hole with center lines in the lateral direction of the slab, and a crank with a first axis engaged with the circular hole and a second shaft with a diameter smaller than the diameter of the first shaft and a center line offset from the center line of the first shaft, and the second shaft is rotated and driven by the said driving device, and in which a plurality of circular holes and a plurality of cranks equipped in the sliders are arranged in a row in the transfer direction of the slab, and constructed in such a manner that one crank bears the moment of the load and the other cranks produce pressing force.

A plate reduction press apparatus comprising:

• a die arranged above or below a slab;
• sliders for moving the die up, down, and backwards and forwards;
• a driving device for driving the slider;
• and
• a slab supporting member arranged opposite the said die above or below the slab, in which each one of the said sliders is comprised of a main unit with a circular hole with a center line in the lateral direction of the slab, a first shaft engaged with the circular hole, and a crank comprised of a second shaft with a diameter smaller than the diameter of the first shaft and a center line offset from the center line of the first shaft, and the second shaft is rotated and driven by the said driving device, in which a plurality of circular holes and a plurality of cranks equipped in the sliders are arranged in a row in the transfer direction of the slab, and constructed in such a manner that one crank bears the moment of the load and the other cranks produce pressing force.