초록 ▼

A cutter hub holder for blades acting against a die plate of an underwater pelletizer including a resilient axially biased blade holder that is drivingly connected with a driven shaft and biased axially toward the die plate by a piston and piston rod engaging a resilient device by a variably control

A cutter hub holder for blades acting against a die plate of an underwater pelletizer including a resilient axially biased blade holder that is drivingly connected with a driven shaft and biased axially toward the die plate by a piston and piston rod engaging a resilient device by a variably controlled pressure. The motor shaft has a through bore to introduce the variably controlled pressure to vary the resilient axial bias exerted on the cutter hub holder. In one embodiment, the driving connection between the shaft and cutter hub holder includes a quick connect and disconnect drive coupling to enable the blade holder to be quickly replaced. In another embodiment, the driving connection between the shaft and cutter hub holder includes an axially movable keyed connection and the piston rod includes two axially spaced pistons to increase the axial force exerted on the cutter hub holder through a resilient device.

대표청구항 ▼

[ What is claimed is:] [1.]1. A cutter hub holder for blades acting in conjunction with a die plate of an underwater pelletizer comprising a blade holder drivingly connected to a driven shaft and biased axially toward the die plate at a variable controlled pressure by a resilient device and biased i

[ What is claimed is:] [1.]1. A cutter hub holder for blades acting in conjunction with a die plate of an underwater pelletizer comprising a blade holder drivingly connected to a driven shaft and biased axially toward the die plate at a variable controlled pressure by a resilient device and biased in the direction of the die plate by fluid pressure, said shaft being provided with an axial bore, the shaft bore including a cylinder bore, and the other end of the shaft bore being connected to a source of fluid pressure by a rotary transmission leadthrough, said cylinder bore slidably receiving a piston and piston rod acting on the holder through said resilient device.