| 摘要 |
The object of the device is to provide a novel cam device applicable to sand moulding machines in which the cam (1) has its active surface (2) facing downwards to prevent sand or dirt from being deposited between said cam (1) and the its supporting follower (10), which the machine is provided with to cause the swivelling of the said cam. For this purpose the cam (1) is hinged at a point (3) to a frame (4) which may move longitudinally, while on another point (5) it is hinged to a connecting rod (6) which is in turn hinged on its opposite end at the point (8) to the front swinging plate (7) of the sand mote moulding machine, with said front plate (7) hinged at the point (9) on its rearmost edge to the frame (4). |
