Apparatus for transversally cutting tubular bodies
AssigneeGa.Vo. Meccanica S.R.L.
InventorsAntonio Tancredi, Stefano Benvenuti
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Abstract
An apparatus for transversally cutting a tubular body of thickness (t) comprises a base frame on which two parallel cylinders are mounted horizontally and arranged to be rotatably actuated in a same rotation direction, thus forming a cradle arranged to support and to rotate the tubular body. A cutting head is arranged above the cradle, including a movable support that is arranged to be brought closer to or further away from the cradle, and that supports a rotatable circular blade arranged to cut the thickness (t) of the rotatable tubular body while being brought closer to the cradle. In order to stabilise the tubular body on the cradle, an idler accompanying or positioning roller is arranged between the cradle and the rotation axis of the blade.
Claims14
An apparatus for transversally cutting a tubular body having a predetermined thickness, said apparatus comprising:
- a base frame;
- a couple of cylinders horizontally arranged parallel to each other at a predetermined distance, and configured to turn in a same direction about respective longitudinal axes integral to said base frame;
- an actuation means for rotatably actuating said tubular body;
- and
- a cutting head including:
- a movable support arranged to perform a displacement towards and away from said couple of cylinders;
- a circular blade rotatably mounted to said movable support about an own rotation axis, and arranged with an own cutting plane transversal to said cylinders, so that, by causing said circular blade to rotate during said displacement of said movable support towards said cylinders, said circular blade transversally cuts said thickness (t) of said tubular body arranged and rotatably moved on said cylinders;
- and
- an accompanying roller rotatably mounted to an arm and arranged to maintain said tubular body in contact with said cylinders during a rotation of said tubular body on said cylinders,
- wherein:
- said actuation means of said tubular body comprises a motor arranged to cause said cylinders to rotate about said respective longitudinal axes,
- said movable support is arranged to perform said displacement, along with said circular blade, on an opposite side of said support with respect to said cylinders,
- said accompanying roller is rotatably idle and arranged on the same side as said cylinders with respect to said rotation axis of said circular blade, and said arm:
- is movably connected to said movable support through a force member selected between an elastic force member and a constant-force member, and
- is arranged to move from a first raised position (A) to a lowered position (B) with respect to said movable support,
- in said raised position (A), said force member is in a rest configuration, and a distance (D1) of said accompanying roller from said cylinders is shorter than a distance (DS) of said circular blade from said cylinders, and
- instead, in said lowered position (B), said force member is in a working configuration, and said distance (D2) of said accompanying roller from said cylinders is longer than said distance (DS) of said circular blade from said cylinders by a predetermined amount d which is at least equal to said thickness (t), that is, the relationship applies:
- t
- ≤
- d
- =
- D
- 2
- -
- D
- s
- .
Dependencies are inferred from the claim text.