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    • 6. 发明专利
    • EXTRUDING DIE ASSEMBLY
    • JPH02150330A
    • 1990-06-08
    • JP26314589
    • 1989-10-11
    • LUPKE MANFRED ARNO ALFRED
    • MANFURETSUDO EE EE RUPUKE
    • B29C47/06B29C48/325
    • PURPOSE: To achieve a fine centering of an inner mandrel without any disadvantage of a supporting spider or side feeder of extrudate by adjusting a position of a second member with respect to a first member and by adjustably centering the mandrel in the first member. CONSTITUTION: Adjustment of a member 26 is performed by a plurality of threaded adjustment bolts 52 spaced around the perimeter of a socket portion 48 in screw threaded enlargement therethrough to act on a bushing 50 surrounding the member 26. The bushing 50 comprises a sleeve extending around the member 26 and having an edge adjacent to an annular port 32. Appropriate selection and adjustment of the bushing 50 causes reduction in tendency of extrudate flow back into an adjustment space 27 provided within the socket portion 48 for adjustment of the position of the member 26 in the socket portion 48. Adjustment of the depth of insertion of bolts 52 provides very fine centering adjustment of a mandrel 20 without any movement of an outside member 12.