4.0   AUTOMATIC LINES FOR STRAIGHTENING AND BENDING         ( Aluminium - Copper Tube ø 6,0 - 12,0 mm )
		4.3    Bending of One Tube per cycle - Bending on different planes

AVAILABLE VERSIONS Non-motorised braked de-reeler holding the tube coil Mod. 170/05.150000 Complete line for one tube diameter and one bending radius Mod. 170/05.000000

Optional Set of parts for second tube diameter Mod. 170/05.100000 Complete set of parts for second bending radius Mod. 170/05.200000 Safety devices to comply the line with CE accident prevention norms Mod. 170/05.300000

EXAMPLES INDICATING THE PRODUCTION YOU CAN OBTAIN  ( Stainless Steel Tube 8 x 0,50 mm) Squared serpentine 200x200 mm - number of turns 8 Ends projecting of 200 mm sec. 170 - 180 Tube diameter… squared serpentine 300x300 mm - number of turns 8 Ends projecting of 200 mm sec. 190 - 200 Tube diameter… squared serpentine 300x400 mm - number of turns 8 Ends projecting of 200 mm sec. 210 - 220 Tube diameter… squared serpentine 400x400 mm - number of turns 12 Ends projecting of 200 mm sec. 310 - 320 Tube diameter… squared serpentine 400x400 mm - number of turns 16 Ends projecting of 200 mm sec. 410 - 420

GENERAL CHARACTERISTICS  The line has an industrial PC for the programming, managing and diagnostics Pentium 4  Diameter of tube which can be produced :  Copper - Aluminium                                                                              Steel - Stainless Steel mm. from 6,0 to 16 from 6,0 to 12  Thickness of tube :                                          Copper - Aluminium                                                                              Steel - Stainless Steel mm. mm. 1,0 0,7  Single de-reeler for tube LAYER coils  Max. coil weight Kg  150  Min. inside diameter mm. 400 - 600  Max. outside diameter mm. 1.200  Straightener - Cutting device - Bending  X axis - Tube progress  Progress - straightening speed (max)  m./sec. 1.300  Tube progress precision mm. ± 0,10  Y axis - bending unit rotation with reference to the horizontal axis  Bending unit rotation speed (max)  °/sec 900  Rotation angle of the bending axis with reference to the  horizontal plane ° 185  Precision of rotation ° ± 0,10  Z axis - Bending  Bending speed (max)  °/sec 1000  Z axis angle - bending ° 190  Bending precision ° ± 0,10  Tube incision for pre-cutting  Time foreseen sec. 1,5 - 2  Min length of the straight section ends of the serpentine mm. 2 times the diameter  Length of the serpentine branch wind to coil  - min                                                               - max mm. mm. 4 times the diameter 1.000  Set - Up  When changing the bending radius min. 3 - 4  When changing the tube diameter min. 25 - 30  When changing the tube coil min. 3 - 5  When changing the pre-cutting incision blade min. 7 - 10  Pre-cutting incision blade life (stainless steel tube) No. cuts 20.000  Bending radii (tube axis) min. 3 - 5  Min radius mm. 1,5 times the diameter  Max radius mm. 67  General  Power supply V - Hz. To be defined  Pneumatic supply Bar 6  Total power installed KW. 15  Total line weight Kg. 25.000  Space necessary for the line m. 7 x 2  Colour of Line  Structure RAL 5021  Openable panels RAL 7032  Movable parts RAL 2011  Optional safety devices RAL 1018

SET-UP  When changing model to be produced           No set up  When changing bending radius                       Replacement of straightener rolls  When changing tube diameter                          Replacement of the parts for straightener and cutting

WORKING CYCLE a)  Key in the product "code" and the quantity to be manufactured b)  Start the line c)  Progress of the tube (N.C. axis X) through straightening motorised rolls, for the length foreseen by the  working program. d)  Rotation of the bending unit (N.C. axis Y) in order to set for the tri-dimensional bending with reference to the  horizontal plane that is foreseen from the working program. e)  Rotation of the bending head (N.C. axis Z) to produce the bending foreseen from the working program. f)  Cycle repeating for all the programmed bents. g)  The tube is blocked by pneumatic clamps and it is incised and preset for the cutting. h)  The tube is cut out in the point of pre-incision by a matrix die put on the bending unit, once the last bent that  the program foresees is done. i)  Automatic repeating of the cycle until the number of pieces programmed is reached.

DESCRIPTION OF THE PARTS COMPOSING THE LINE:  Non motorised single de-reeler to unwind tube in coils  Machine for the Straightening, Bending and Cutting of tube Group for the progress, straightening and calibration of tubes (1st controlled - X axis) composed by:     -  No. 4 steel rolls with interchangeable insert made of Vulkollan with groove correspondant to the tube diameter,                   for the tube progress.     -  No. 7 hardened steel rolls for the tube progress and calibration of the outside diameter and straightening                   simultaneously.     -  Motorisation of all the rolls by means of a motoreducer and BRUSHLESS motor (variable speed) Tube cutting group composed by:     -  No. 2 Pneumatic clamp couples to lock the tube for the incision operation     -  No. 1 Rotating device with induction motor complete with no. 1 tool (blade) rotating on the tube for the incision                   of an adjustable depth with reference to the tube thickness.  N.C. Bending machine with two controlled axis, (Y) axis bent inclination with reference to the horizontal plane -  (Z) axis bending angle.

TABLES FOR THE STORING OF BENDING MACHINE PARAMETERS :  After carrying out some tests to collect data, store in the appropriate tables of the computer of the line data: Spring back - after bending     (Example: rotation of bending unit at 180° - measured on the tube = 175° - spring back = 5°). By storing this value     (5°) on the table, when programming 180° bending, the bending unit will rotate up to 185°, thus achieving on the     tube the programmed angle of 180°. Storing the spring back of two angles (90° and 180°) it will be possible to make     any bending angle with automatic correction of spring back. Elongation - the tube lengthens when subject to bending     (Example: elongation with 90° bending = 2 mm , 180° bending = 5 mm) The N.C. clamp, while transporting the tubes     to the bending unit, will consider the parameter "elongation" making the set straight section of the correct length.  It will be possible to program for single bending pitch, in addition to the length and the bending angle:

PROGRAMMING  The operator will have to digit on the push-button board:       Code of the product to be manufactured       Type of material of the tube       Bending radius and tube diameter       Bending program       1st step       straight section length (X axis) section between the beginning of the tube to the center of the 1st                            bending axis, bending angle with reference to the horizontal plane (Y axis) and bending angle (Z axis).       2nd step      and follwing can be automatically copied from the 1st step an dinserted in every single following step                            with alternative signs (+ and -). All the programs will be stored and held by the computer memory of the bending line.