| 摘要 |
A screw supply apparatus includes a screw feeding unit, a screw transfer unit, and an escape unit. In the screw supply apparatus, the screw feeding unit includes a rotating drum having a horizontal rotating shaft. At a rear surface fixation bearing portion positioned on the rear surface side of the rotating drum, a screw input portion is provided for introducing screws into the rotating drum. Also, at a front surface fixation bearing portion positioned on the front surface side of the rotating drum, an opening is formed. The screw transfer unit includes a pair of transfer rails, which has a central groove and is inserted from the opening of the front surface fixation bearing portion into the rotating drum. In the vicinity of the outer circumference of the rotating drum, a drive cam is provided. |
| 主权项 |
1. A screw supply apparatus which includes a screw feeding unit, a screw transfer unit, and a screw discharging unit, wherein the screw feeding unit includes a rotating drum having a horizontal rotating shaft,
at a rear surface fixation bearing portion positioned on the rear surface side of the rotating drum, a screw input portion is provided for introducing screws into the rotating drum, at a front surface fixation bearing portion positioned on the front surface side of the rotating drum, an opening is formed, the screw transfer unit includes a pair of transfer rails, which has a central groove and is inserted from the opening of the front surface fixation bearing portion into the rotating drum, in the vicinity of the outer circumference of the rotating drum, a drive cam is provided, a cam roller is provided so as to come into contact with the drive cam according to rotation of the rotating drum, and if a screw is mounted on the transfer rails so as to be on top of any other screw, the cam roller is operated, whereby a screw dropping mechanism is operated so as to drop the unaligned screw into the rotating drum, wherein the screw discharging unit has a screw outlet for taking out screws and a leading-end screw detecting unit for detecting whether there is any screw necessary to be taken out in the vicinity of the screw outlet, in a case where the leading-end screw detecting unit detects that there is a screw, a screw extracting mechanism of the screw discharging unit is operated so as to take out the corresponding screw from the final end portion of the transfer rails and arrange the corresponding screw in the screw outlet, and the leading-end screw detecting unit includes a light emitting unit and a light receiving unit, which use the tips of optical fibers. |
