Mitsubishi Denki Kabushiki Kaisha

Kenichiro Sakamoto

Minoru Tanaka

Masayuki Yamamoto

Katuhiko Yamasaki

Yoshihiko Minematsu

A molding apparatus has a fixed upper platen and a movable lower platen on which are secured an upper and a lower mold half, respectively. A cleaning device for cleaning the mold surfaces of the mold halves is installed on the upper platen, and the lower platen is open so that foreign matter will not accumulate atop it.

Method of cleaning semiconductor molding apparatus

Molding apparatus for sealing semiconductor devices including a mold

Wrist device of industrial robot

An industrial robot includes a plurality of motors provided at an end of a hollow link, torque transmission units provided within said link for transmitting rotational torques of the plurality of motors, and rotary units for a plurality of independent rotational motions in response to each of the motors. The rotary units provided at the other end of the hollow link and are drivingly connected to the torque transmission units. The rotary units comprise a first rotary device having a first box and rotating about an axis of the hollow link, a second rotary device having a second box and rotating about a rotary axis which obliquely intersects with a rotary axis of the first device, and a third rotary device having an output shaft and rotating about a rotary axis which intersects obliquely with the rotary axis of the second rotary device. The second rotary device includes a first transmission shaft (43a) one end portion of which is directly connected to the second box (66) and the other end portion of which is drivingly connected to one of the torque transmission units. The second rotary device substantially surrounds the third rotary device. Thus, the industrial robot may be made compact in size, light in weight and superior in performance.

Industrial robot

Growing community of inventors

Fukuoka, Japan

Kenichiro Sakamoto