Sica S.p.a.

Marco Gulminelli

Giorgio Tabanelli

Lorenzo Spagna

A cutting unit for thermoplastic pipes includes a ring rotating about an axis and in which a pipe is progressively moved in a sliding fashion such that a longitudinal axis of the pipe coincides with the axis of rotation and a cutting arm mounted on the ring. A distance measurement sensor located on the ring is configured for acquiring, during rotation of the ring, values representing a radial distance between the measurement sensor and an outer surface of the pipe. The distance is measured on a measurement plane transversal to the axis of rotation. The cutting unit also includes a processing and control unit operatively connected to the measurement sensor and configured for receiving the values measured and for calculating, on the basis of the values, at least one parameter representing a peripheral profile of the pipe on the measurement plane.

Cutting unit for thermoplastic pipes

A method for cutting a pipe made of thermoplastic material including, in combination, the following steps: feeding a continuous pipe made of thermoplastic material; localised and circumferential heating of a first localised axial portion of the pipe for a predetermined time using a heating unit; cutting without removal of chippings, using a cutting unit, of the first heated axial portion, to obtain a piece of the pipe; localised and circumferential heating of a second localised axial portion of the pipe, for a predetermined time, the second axial portion being placed at a predetermined distance from the first portion.

Method and apparatus for cutting a pipe made from thermoplastic material

An apparatus for cutting pipes made of thermoplastic material, including: a tool for cutting pipes, an arm for supporting the tool which is movable between a non-operating configuration wherein the tool is disengaged from the pipe and an operating configuration wherein the tool is engaged in the pipe to exert a cutting action on the pipe, a lever which can be constrained to the arm, supporting device configured to move said lever, a locking unit for reversibly constraining said arm and said lever and disengaging means to move said arm from the operating configuration to the non-operating configuration.

Device for cutting tubes of thermoplastic material

An apparatus for cutting pipes made of plastic material in automatic cutter machines, including a tool for cutting pipes made of plastic material, a first rocker arm supporting the cutting tool, movable between a non-operating configuration at which the tool is disengaged from the pipe and an operating configuration wherein the tool is designed to exert its cutting action on the pipe, a second arm, for controlling the first arm, operatively connected to the first arm for moving it at least between its non-operating and operating configurations, the second arm comprising a first electric actuator and a supporting body slidably connected for modifying its reciprocal position between a close position and a spaced-apart position.

Apparatus for cutting pipes made of plastic material

Described is a method for chamfering the end of a pipe () made from thermoplastic material, comprising the following steps: localized and circumferential heating of an axial portion () of the pipe () at a predetermined temperature; plastic deformation of the heated axial portion () using a tool () for forming a chamfer on the axial portion ().

Method and apparatus for chamfering an end of a pipe made from thermoplastic material

An apparatus () for cutting a pipe () made of thermoplastic material including: a cutting unit (T) which includes a tool equipped with a disk () rotatable about an axis (XI) and which are used to allow a rotary motion of the axis (XI) of the disk () about an axis (X) of the pipe () and disk () sinking into the pipe () in a radial direction; a lubricant dispensing unit (L) for the disk (), used to operate on at least one portion (P,P) of a face (F,F) of the disk (), for releasing a predetermined quantity of lubricant on it so as to reduce the friction between the disk () and the pipe () during cutting.

Apparatus and method for cutting pipes of thermoplastic material

Described is a method for cutting a pipe () made from thermoplastic material, comprising the steps of localized and circumferential heating of an axial portion () of the pipe () at a predetermined operating temperature and processing, using a cutting tool (), the heated axial portion ().

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Lavezzola, Italy

Marco Gulminelli