Mechanism for and method of correcting yawing of conveyed workpiece

摘要

A holding device to hold a side portion of a conveyed workpiece; a running device to convey the holding device in a feeding direction along a rail; and a support mechanism to support the holding device at front portion and rear portions of the mechanism. Eccentric shafts are with the holding device at respective positions, at one position, one of front and rear portions is eccentric in the feeding direction by a predetermined amount relative to one drive shaft's axis included in the running device. At the other position, one of front and rear portions is eccentric crossing the workpiece feeding direction by a predetermined amount relative to one drive shaft's axis in the running device. The yawing occurring while the workpiece is conveyed, is corrected by rotating the axes of eccentric shafts axes such the holding device moves relative to the running device's position.

主权项

1. A yawing correcting mechanism for correcting yawing of a conveyed workpiece conveyed in a workpiece feeding direction, the mechanism comprising:
a holding device configured to hold a side portion of the conveyed workpiece; a running device configured to support the holding device and convey the holding device in the workpiece feeding direction along a rail; and a support mechanism configured to support the holding device at a front portion and a rear portion of the support mechanism, the front portion and the rear portion being arranged in the workpiece feeding direction of the running device, wherein the support mechanism includes:
rotating shafts included in one of the holding device and the running device; andeccentric shafts included in the other one of the holding device and the running device, the eccentric shafts including respective axes parallel to the corresponding rotating shafts, the axes of the eccentric shafts being disposed at respective positions such that, at one of the positions, one of the front portion and the rear portion is eccentric relative to an axis of the corresponding rotating shaft in the workpiece feeding direction by a predetermined eccentricity amount, and at the other position, the other one of the front portion and the rear portion is eccentric relative to an axis of the corresponding rotating shaft in a direction crossing the workpiece feeding direction by a predetermined eccentricity amount, andthe yawing correcting mechanism is configured to correct the yawing of the conveyed workpiece by rotating the axes of the eccentric shafts around the axes of the rotating shafts, such that the holding device moves relative to the running device.