EXTRUSION PRESS AND CONTROL METHOD FOR EXTRUSION PRESS

摘要

Provided are an extrusion press and control method for an extrusion press, provided with a means which can prevent phenomena in which a billet is blown out during an extrusion process as well as prevent billet blowout with a simple and inexpensive constitution. The extrusion press drives a main cylinder device (12) to extrude, by means of a stem (24), a billet (20) filled into a container (18) from a die (16) and form a product (20A). A gap measurement means (60) that measures a gap, during the extrusion process, arising at the container seal surface formed by pressing the die side end surface of the container (18) against the container side end surface of the die (16) is provided on an end platen (10) on the outer edge part of the container side end surface of the die (16). When the gap arising during the extrusion process is measured and the measured value is within a predetermined range of allowable values, a set value for the extrusion rate is lowered and a warning is issued.;When the measured value exceeds the predetermined allowable values, the extrusion process is stopped.

主权项

1. An extrusion press which drives a main cylinder device to extrude a billet which is loaded in a container from a die by a stem so as to form a product, the extrusion press characterized in that
a gap measuring means for measuring a gap in an extrusion process which is formed at a container seal surface which is formed by pushing a die side end face of said container against a container side end face of said die is provided at an end platen of the outer edge of the container side end face of said die through an attachment member.