Shinko Electric Company, Ltd.

Yuushi Sato

Kazumichi Kato

Yasushi Muragishi

Tetsuyuki Kimura

Katsumi Yasuda

Nobuhiro Saito

Susumu Nakagawa

Tsukasa Sugino

A piezoelectric driven type vibratory feeder having a working mass member that vibrates stably over an entire area of the working mass member is disclosed. The piezoelectric driven type vibratory feeder includes a base, a plurality of first plate springs, with a lower end portion of each of the plurality of first plate springs being secured to the base. A working mass member connected to an upper end portion of each of the plurality of first plate springs and supported at the base to enable the working mass member to vibrate. The piezoelectric feeder also includes a plurality of second plate springs, a piezoelectric device bonded to at least one surface of each of the plurality of second plate springs. An alternating voltage is applied to each piezoelectric device whereby each second plate spring undergoes bending vibration and causes the working mass member to vibrate so that an object is transported on the working mass member.

Piezoelectric driven type vibratory feeder

A suspension type hoisting apparatus has the position of an elevating portion, which is elevatably suspended from a base via a suspension member, adjusted by a positioning member for positioning the suspension member suspended from a carriage in the horizontal plane. The suspension type hoisting apparatus also includes a position controller for outputting a velocity reference signal on the basis of a deviation between a position reference signal of the positioning member and the actual position thereof, and a velocity controller for outputting a force reference signal being a manipulated variable of the positioning member on the basis of a deviation between the velocity reference signal, of the positioning member, outputted from the position controller and the actual velocity thereof; wherein a sway velocity of the elevating portion is detected. A sway controlling signal, with respect to the positioning member, is generated on the basis thereof, and the sway controlling signal is added to the force reference signal outputted from the velocity controller. Thereby, in a case where there is sway at the elevating portion, the positioning member is equivalently displaced in proportion to a sway velocity of the elevating portion, the sway of the elevating portion is suppressed in a remarkably short time, and at the same time, the elevating portion is accurately positioned at a reference position along with attenuation of sway of the elevating portion.

Suspension type hoisting apparatus

Growing community of inventors

Ise, Japan

Yuushi Sato