US 4,713,992 A · Process and apparatus for truncating tubes

Abstract

The invention relates to a truncation apparatus and a process of truncating tubes. The truncation apparatus includes a mandrel, a means for advancing the tube to be truncated along the mandrel, at least one knife positioned in proximity to the free end of the mandrel, a slide moveably mounted on the mandrel and an exterior abutment whose distance with respect to the knife is adjustable, in addition to at least one reference system which is longitudinally adjustable adjacent the mandrel and defines predetermined and adjustable lengths between the front end of slide and the knife, and is provided with means to stop the longitudinal displacement of the slide in a manner so as to define a selected length for the last truncated portion of the tube. A method for truncating tubes wherein a length of tube is positioned on a mandrel and cut into at least a first section including one of the end edges of the tube and a last section including the other end edge of the tube.

Claims7

Dependent claims

An apparatus for truncating a tube positioned on a mandrel and having a free end that moves forwardly in an axial direction and a travelling end comprising:

(a) a mandrel having one end attached to a frame and an opposite free end on which a tube to be cut is mounted;
(b) a slide having a forward end coaxially mounted on said mandrel so as to contact said trailing end of the tube;
(c) means to move said slide operably connected to said slide so as to advance the tube axially from said one end towards said free end of of said mandrel;
(d) means for cutting located adjacent said free end of the mandrel;
(e) an abutment for engaging the free end of the tube;
(f) a reference system for determining the distance between said slide and said means for cutting and for controlling said means to move the slide, said reference system being positioned laterally with respect to said mandrel in communication with said slide.

3 more elements

An apparatus for truncating a tube positioned on a mandrel and having a free end that moves forwardly in an axial direction and a trailing end comprising;

(a) an mandrel having one end attached to a frame and an opposite free end on which a tube to be cut is mounted;
(b) a slide having a forward end coaxially mounted on said mandrel so as to contact said trailing end of the tube;
(c) means to move said slide operably connected to said slide so as to advance the tube axially from said one end and towards said free end of said mandrel;
(d) means for cutting located adjacent said free end of the mandrel;
(e) an abutment for engaging the free end of the tube;
(f) a reference system for determining the distance between said slide and said means for cutting and for controlling said means to move the slide, said reference system being positioned laterally with respect to said mandrel in communication with said slide;
and
(g) means for coupling said slide with said means to move said slide, said means for coupling including a projection, a carriage for moving axially parallel with respect to said mandrel, said carriage being provided with an element for contacting said projection when said means for coupling and said carriage are aligned in the same plane transverse to the longitudinal axis of said mandrel.

5 more elements

Dependencies are inferred from the claim text.

Process and apparatus for truncating tubes

Life of this patent

Process and apparatus for truncating tubes

Life of this patent

Abstract

Claims7