Overturnable bending machine

Abstract

A bending machine includes a fixed frame ( 3 a, 3 b, 4 ) and a movable body ( 1 ), the latter being able to be tilted and being able to reach both a vertical and a horizontal machining position. This bending machine allows machining to be carried out also in situations of limited space, for example in small workshops. Moreover, it allows to avoid that the result of the machining is negatively affected by the weight of the piece/profile ( 12 ). The distribution of the mass in the movable body ( 1 ) may be of various type to obtain different advantages. A locking system ( 5, 6, 7, 15 ) is advantageously provided to lock the movable body ( 1 ) in the vertical position or in the horizontal position with respect to the fixed frame ( 3 a, 3 b, 4 ).

1 . Bending machine for bending pieces ( 12 ) of elongated shape, for example profiles, tubes, metal bars, or the like, comprising deforming rollers ( 9   a,    9   b ;  9   c ) mounted frontally with parallel rotation axes ( 10 ) on a body ( 1 ) of the bending machine, at least one of said rollers ( 9   c ) being vertically translatable within a vertical guide by means of an actuation system along the body ( 1 ) of the bending machine maintaining the rotation axis ( 10 ) thereof parallel with itself, and at least one of said deforming rollers ( 9   a,    9   b;    9   c ) being actuatable by a further actuation system to rotate around the rotation axis ( 10 ) thereof, the workpiece ( 12 ) being able to be positioned, to perform machining, between said deforming rollers ( 9   a,    9   b;    9   c ), wherein said body ( 1 ) of the bending machine is mounted in a movable manner on two stationary sides ( 3   a,    3   b ) of a fixed frame ( 3   a,    3   b,    4 ) of the bending machine, which also comprises a base ( 4 ) integral with the stationary sides ( 3   a,    3   b ) themselves, said body ( 1 ) being able to reach at least two machining positions at 90° with each other, that is a horizontal position and a vertical position. 
     
     
         2 . Bending machine according to  claim 1 , wherein said movable body ( 1 ) of the bending machine is mounted onto the two stationary sides ( 3   a,    3   b ) on an oscillation horizontal axis ( 8 ) connecting said two stationary sides ( 3   a,    3   b ) with each other. 
     
     
         3 . Bending machine according to  claim 1 , wherein a locking system ( 5 ,  6 ;  7 ,  15 ,  16 ,  17 ,  18 ) is provided to lock the body ( 1 ) to the sides ( 3   a,    3   b ) in at least one of said two alternative processing positions, horizontal and vertical. 
     
     
         4 . Bending machine according to  claim 3 , wherein the distribution of the mass in the body ( 1 ) is such that the latter spontaneously tends to move in the vertical position, in an unlocked condition of the locking system ( 5 ,  6 ;  7 ,  15 ,  16 ,  17 ,  18 ). 
     
     
         5 . Bending machine according to  claim 3 , wherein said locking system ( 5 ,  6 ;  7 ,  15 ,  16 ,  17 ,  18 ) is completely manual and it comprises respective hand wheels ( 7 ) provided with corresponding threaded pins ( 15 ) which can be screwed in first ( 5 ) and respectively second ( 6 ) threaded hole bushings, such first and second bushings ( 5 ,  6 ) being integral with two respective side walls ( 13   a,    13   b ) of the movable body ( 1 ) of the bending machine, and the threaded pin ( 15 ) of each hand wheel ( 7 ) being able to pass through, before being screwed in the relative bushing ( 5  or  6 ), a respective through hole ( 16 ) alignable with the threaded hole ( 17  or  18 ) of the corresponding bushing ( 5  or  6 ). 
     
     
         6 . Bending machine according to  claim 3 , wherein the distribution of the mass in the body ( 1 ) is such that when the locking system ( 5 ,  6 ;  7 ,  15 ,  16 ,  17 ,  18 ) is unlocked, the body ( 1 ) can be manually rotated in both rotation directions around the oscillation axis ( 8 ) with a minimum effort. 
     
     
         7 . Bending machine according to  claim 2 , wherein  1 , an actuation system is provided, for example an electric or hydraulic motor, to carry the body ( 1 ) of the bending machine into the vertical position and respectively into the horizontal position. 
     
     
         8 . Bending machine according to  claim 7 , wherein said actuation system, for example with electric or hydraulic motor, is directly coupled to the horizontal oscillation axis ( 8 ) of the movable body ( 1 ) of the bending machine. 
     
     
         9 . Bending machine according to  claim 1 , wherein the machine provides for an encoder ( 11 ) adapted to detect exactly the deflection coefficient of the piece ( 12 ) on the convex part of the piece ( 12 ) as it is bent. 
     
     
         10 . Bending machine according to  claim 2 , wherein a locking system ( 5 ,  6 ;  7 ,  15 ,  16 ,  17 ,  18 ) is provided to lock the body ( 1 ) to the sides ( 3   a,    3   b ) in at least one of said two alternative processing positions, horizontal and vertical. 
     
     
         11 . Bending machine according to  claim 4 , wherein said locking system ( 5 ,  6 ;  7 ,  15 ,  16 ,  17 ,  18 ) is completely manual and it comprises respective hand wheels ( 7 ) provided with corresponding threaded pins ( 15 ) which can be screwed in first ( 5 ) and respectively second ( 6 ) threaded hole bushings, such first and second bushings ( 5 ,  6 ) being integral with two respective side walls ( 13   a,    13   b ) of the movable body ( 1 ) of the bending machine, and the threaded pin ( 15 ) of each hand wheel ( 7 ) being able to pass through, before being screwed in the relative bushing ( 5  or  6 ), a respective through hole ( 16 ) alignable with the threaded hole ( 17  or  18 ) of the corresponding bushing ( 5  or  6 ). 
     
     
         12 . Bending machine according to  claim 1 , wherein an actuation system is provided, for example an electric or hydraulic motor, to carry the body ( 1 ) of the bending machine into the vertical position and respectively into the horizontal position.