| 摘要 |
The specification discloses a puller apparatus for pulling an extrusion profile as it emerges from an extruder. A puller carriage is mounted for rolling motion beneath a track which extends away from the extruder and a puller jaw is located on the front of the carriage for grasping the extrusion profile to be pulled. The track includes two spaced apart, opposed, parallel rails extending parallel to the track. An upwardly and inwardly facing running surface is formed on each rail. Inclined wheels are rotatably attached to the carriage and are configured to engage and roll on the running surfaces of each rail so that as the profile is being pulled away from the extruder, the inclined wheels transmit to the running surfaces downward, upward and lateral forces which occur during the extrusion process. Thusly configured, upward, downward and lateral movement of the carriage relative to the extruder is substantially reduced or eliminated during the pulling process thereby preventing undesirable twisting or bending of the profile as it cools.
|
