| 摘要 |
<p>A variable opening extruder die means for utilization with a rubber drying extruder includes a housing (12) having a die means passage formed therein for receiving a cylindrical die rod. An inlet chamber is formed in the housing transverse to and upstream of the die means passage for receiving rubber extrudate material. At least one channel (32, 34) is formed in the housing to provide communication from the inlet chamber through the die means passage and thence to a cutter means (40). The die rod (46) is provided with at least one plurality of vertically arranged extrusion orifices (54, 58) which, when the die rod (46) is disposed in the die means passage, are adapted to be aligned longitudinally with the channel. The extrudate material is thereby received by the inlet chamber, extruded through the aligned extrusion orifices (54, 58), and presented to the cutter means (40), which shears off the material to form pellets. The die rod (46) is movable axially within the die means passage, by mechanical, hydraulic or electrical means, for purposes of varying the number of extrusion orifices (54, 58) which are in alignment with the channel and, hence, the number of orifices through which the material is extruded.</p> |
