| 摘要 |
<p>A drive-reversing safety mechanism for the motor-driven safety gate of an injection molding machine, featuring a channel-shaped contact bar which is pivotably attached to the outer vertical corner on the leading edge of the safety gate and biased forwardly, so as to pivot rearwardly, when encountering an obstacle while closing. A minimal initial displacement of the contact bar produces the depression of a transversely oriented plunger of a reversing switch with the aid of a flexible, bell-crank-type actuating lever in the shape of an open triangle. A curved end flange of the contact bar drives the actuating lever with a trigger edge, overriding the initial switching displacement, while holding the switch plunger in a depressed position.</p> |
