Pipe bending machine with rear calender and its respective calendering procedure
AssigneeCRIPPA S.p.A.
InventorsAlessandro Pace, Claudio Bargna
Life of this patent
Estimating the term…
Abstract
A machine to bend pipes and the like, equipped with at least one bending die working table more than the machines used to bend pipes and the like,
Claims7
A machine to bend pipes and the like comprising a bed (1) having, at one of its ends (2), a plate (3) capable of moving along the X-axis parallel to the table on which the bed (1) is located, a bending head (4) connected to the plate (3), said bending head (4) being capable of moving along the Z-axis orthogonal to the table on which the bed (1) is located, equipped with at least one bending arm (5), at least one bending die (6), at least one calendering jig (7), and means (8) to feed the pipe (9) characterized in that said calendering jig (7) has a position (P) located before the bending die (6) as moving in the feeding direction (D) of the pipe (9).
A procedure to calender the pipe (9) by using the machine to bend pipes and the like according to one or more of the previous claims, characterized in that it comprises the following steps:
- a first step, in which the portion (9′) of the pipe (9) to be calendered (9) is positioned in correspondence with the first rolls (101 and 102);
- a second step, in which the portion (91) is locked by the first rolls (101 and 102);
- a third step, in which the plate (3) is moved along the X-axis, so as to position the second roll (11) in such a position as to determine the calendering radius according to the operating process set by the operator;
- a fourth step, in which the portion (91) is fed towards and beyond the second roll (11).
Dependencies are inferred from the claim text.