摘要:
A plurality of carriers are attached to an endless belt configured to rotate in a circulating manner. At a station, a hand, a driver configured to move the hand in a rotation direction and a vertical direction, a first carrier sensor configured to detect the carriers at a predetermined position upstream of the hand along the rotation direction of the endless driving medium, and a second carrier sensor for detecting the carriers at a position downstream of the first carrier sensor are provided. When the carriers pass through the second carrier sensor, it is checked whether the moving distance of the belt matches the distance between the two carrier sensors. In this manner, before starting loading or unloading, for example, whether the encoder is operated normally or not can be confirmed.
摘要:
A plurality of carriers are attached to an endless belt configured to rotate in a circulating manner. The carriers hold articles for transportation. Each of the carriers has an identification target for carrier identification. A plurality of stations are provided, and each of the stations has a hand configured to load articles to or unloading articles from the carriers and a sensor configured to detect the identification target at a predetermined position upstream of the hand along a rotation direction of the belt. The carrier is identified, and appearance of the carrier is recognized based on a signal from the sensor for operating the hand for a desired carrier. The carrier can be identified using the sensor for detecting the position of the carrier.
摘要:
A plurality of carriers are attached to an endless belt configured to rotate in a circulating manner. At a station, a hand, a driver configured to move the hand in a rotation direction and a vertical direction, a moving distance sensor configured to measure moving distance of the endless belt, a carrier sensor configured to detect the carrier at a position upstream of the hand along the rotation direction, and a signal processor configured to operate the hand are provided. For loading an article, when the moving distance from a time point of detection of the carrier by the carrier sensor reaches a first moving distance, the hand is activated at a first acceleration, and for unloading an article, when the moving distance from the time point of detection of the carrier by the carrier sensor reaches a second moving distance which is larger than the first moving distance, the hand is activated at a second acceleration which is larger than the first acceleration. The delay in signal processing after detection of the carrier does not affect control, and both of loading and unloading can be performed in substantially the same area.