초록 ▼

The alignment device or jig is utilized in aligning a shaft of a pelletizer perpendicular with a die face and includes a sensing/scraping assembly which is adapted to travel on a die face and scrape polymer drool off the die face until a scraping edge of the assembly is in constant contact with the

The alignment device or jig is utilized in aligning a shaft of a pelletizer perpendicular with a die face and includes a sensing/scraping assembly which is adapted to travel on a die face and scrape polymer drool off the die face until a scraping edge of the assembly is in constant contact with the die face during rotation of the jig on the shaft of the pelletizer. The scraping edge is mounted on the end of a rod which is spring biased toward the die face and which is axially movable in a bore in the jig and movement of the rod indicates nonperpendicularity of the shaft to the die face. After adjusting the skew of the shaft, cessation of movement of the rod in the bore in the jig will indicate a true perpendicularity of the shaft to the die face.

대표청구항 ▼

A method for using a cutter assembly alignment jig of the type comprising: a hub mountable on the rotatable shaft for the cutter assembly; an arm extending radially outwardly from said hub to a distal end portion of said arm; said distal end portion having a throughbore extending therethrough; said

A method for using a cutter assembly alignment jig of the type comprising: a hub mountable on the rotatable shaft for the cutter assembly; an arm extending radially outwardly from said hub to a distal end portion of said arm; said distal end portion having a throughbore extending therethrough; said throughbore having an axis parallel to the axis of the shaft of the cutter assembly; a rod received in said throughbore; means for resiliently biasing said rod toward said die face; and scraping/sensing means mounted on on a forward end of said rod and having a scraping edge contacting the die face for scraping drool of polymer material off the die face and for sensing the portion of the die face such that the continuous contact of said scraping edge with the die face facilitates accurate measuring of the perpendicularity of the rotatable shaft to the plane of the die face, said method including the steps of: (a) heating the die face; (b) mounting said jig on said cutter assembly shaft; (c) holding said rod away from the die face against the action of said biasing means; (d) positioning the jig so that said scraping edge is approximately ⅛inch from the die face; (e) securing the jig to the shaft; (f) releasing said rod so that said biasing means bias said scraping edge toward the die face to bring the scraping edge against the die face; (g) rotating the shaft and jig thereon to determine if the shaft is “true”perpendicular relative to the plane of the die face; (h) recording changes in movement of said rod toward or away from the die face; (i) determining generally the radial direction of the skew of the shaft; (j) determining the direction and distance which the shaft should be moved relative to the die face to provide a truer perpendicularity of the shaft to the plane of the die face; (k) holding the rod away from the heated die face against the action of the biasing means; (l) making a small adjustment of the position of the shaft toward a determined new position thereof providing a “truer”perpendicularity of the shaft to the plane of the die face; and (m) repeating steps (f) through (l) until a substantially continuous constant position indication is sensed by said scraping/sensing means which indicates a true perpendicularity of the shaft to the plane of the die face.