| 摘要 |
An improved system and method for removing extrusion screw elements includes a puller assembly for removing at least one screw element from a screw shaft of a screw-type extrusion machine. The at least one screw element includes a sleeve portion received annularly about the screw shaft and at least one flute extending radially outward from the sleeve portion. The puller assembly includes a body having a sleeve portion with an inner diameter sufficiently sized for axially fitting over the at least one screw element on the screw shaft. At least one engaging element is removably secured to the body for enabling the body to be axially installed on the at least one screw element when the at least one engaging element is removed from the body and axially locking the body on the at least one screw element when the at least one engaging element is installed in the body. The at least one engaging element extends radially inward relative to the inner diameter of the sleeve portion beyond an outer radial edge of the at least one flute when the at least one engaging element is installed in the body to axially lock the body to the at least one screw element. To remove the at least one screw element from the screw shaft, an axial pulling force is applied to the body to axially move the at least one screw element relative to the screw shaft.
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