| 摘要 |
Extrusion machine for profiles, especially pipes (4), has two or more rollers (1 - 3) which fit around the pipe. The rollers have grooves on their inner side which can be adjusted so that their surfaces (12a, 12b, 22a, 22b, 32a, 32b) fit against different types of profile and their edges fit against those on the other rollers. Independent claims are included for: (A) pipe calibration stations with a guide as described; (B) vacuum tanks for use in profile extrusion fitted with inlet and outlet seals designed as described; and (C) profile clamps with the same design. |
