Kneading degree adjusting device for twin extruder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 29, 2001
Issued Date -
N/A
app pub date -
Apr 28, 2000
filing date -
Apr 28, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cylinder 2 is formed with an upper guide bore 10a and a lower guide bore 10b at a position corresponding to a gate part B. Gate rods 7 are rotatably inserted through the guide bores 10a, 10b, respectively. Each of the gate rods 7 is formed with opening degree changing recesses in a form of an opencut adjacent to each other in an axial direction in order to constitute opening degree variable channels S in combination with opening degree variable channel forming parts 14 of two screws 3. Each of the recesses 11 consists of a first semicircular face 12 and a second semicircular face 13 in such a shape that an upstream side end of the first semicircular face 12 is diagonally cut. By rotating the gate rods 7 in a positive direction and a reverse direction, the opening degree can be changed between a fully opened state wherein the first semicircular face 12 and the opening degree variable channel forming part 14 are in parallel and a fully closed position wherein the second semicircular face 13 is in abutment against the opening degree variable channel forming part 14.
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