Patent ID: 9498894
Filing Date: 2016-11-22
CPC Classification: B26D,B26F,B29C,Y10T

Claim Text:
1. A cutting device for cutting off melt-delivery channels from a workpiece, the cutting device comprising: a bottom plate; a platform located on the bottom plate for holding the workpiece in position; a first support plate connected to the bottom plate by at least one positioning rod and located above the bottom plate; at least one first telescopic cylinder extending from the first support plate toward the bottom plate and defining a first upper cavity, a first lower cavity isolated from the first upper cavity and comprising a first piston between the first upper cavity and the first lower cavity; a second support plate connected to the first piston and configured to be moved by the first piston toward or away from the bottom plate; a first medium providing device configured to provide a medium for moving the first piston; a first switch comprising a gateway (A a first sensor comprising a gateway (A a second telescopic cylinder comprising a second upper cavity, a second lower cavity isolated from the second upper cavity, and a second piston between the second upper cavity and the second lower cavity; a second medium providing device configured to provide a medium for moving the second piston; a blade connected to the second piston and configured to be moved by the second piston toward or away from the workpiece; a second switch comprising a gateway (A a second sensor configured to be abutted by the second support plate when the second support plate is moved by the first piston toward the bottom plate, the second sensor comprising a gateway (A wherein when the first sensor is actuated by the platform and the first switch is manually switched on, the medium provided by the first medium providing device enters the upper cavity of the first telescopic cylinder for driving the first piston to move the second support plate toward the bottom plate; wherein when the first switch is manually switched off, the medium provided by the first medium providing device enters the lower cavity of the first telescopic cylinder for driving the first piston to move the second support plate away from the bottom plate; wherein when the second sensor is actuated by the second support plate and the second switch is manually switched on, the medium provided by the second medium providing device enters the second upper cavity of the second telescopic cylinder for driving the second piston to move the blade toward the workpiece to cut off the melt-delivery channels from the workpiece; and wherein when the second switch is manually switched off, the medium provided by the second medium providing device enters the second lower cavity of the second telescopic cylinder for driving the second piston to move the blade away from the workpiece.