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48004B Machine for HF welded tube mill
The line for high frequency (HF) welded tubes is a line expressly dedicated to produce tubes of various forms (round, square, rectangular) and with thicknesses that can vary from a minimum thickness of 0.6 mm to a maximum of 3 mm. The line is characterized by a remarkable production speed. In order to achieve high production speeds, the line is supplied with a double pivoting 3t + 3t decoiler which is followed by the heading and welding bench. The subsequent strip accumulator in spirals ensures the accumulation of sufficient material to feed the roll forming machine with the required high speeds. Then the welding head connects the profile, and positioned after the cooling station there are the calibration heads followed by the turkish heads, that give the required shape and dimensional tolerance. The subsequent flying saw cuts the product to the required measure, which is then placed on the unloading bench which automatically takes the finished product oyut of the line. As an option it is possible to have additional cassettes to perform the quick change of the product.
Technical data
| 3 t |
| 250 mm |
| 0,6 / 3 mm |
| 8000 mm |
| steel - max 60 kg/mm² |
| ± 2 mm |
Machine configuration
Two motorised decoilers (or idle on request) with 1 ton capacity. Their base is pivoting; therefore the stopping time to insert the coil is extremely reduced. Complete with independent hydraulic unit and electric plant. Unit for the mandrel regulation, electric plant for the automatic / manual mode and for the speed regulation. Complete with loop, arm for loop control and spokes to keep the strip in the correct position.
Technical data
| Decoiler capacity | 3 | ton |
|---|---|---|
| Shaft diameter (min/max) | 470/530 | mm |
| Coil max. ext. Ø | 1800 | mm |
| Motorized AC decoiler with inverter | 2,2 | kW |
The 3 mm thickness heading and welding group performs a first locking of the strip to be processed with the first vice, then cuts the entering strip and blocks it with the second vice, after facing heading operation by the operator. Now starts the automatic welding, after which the vices unlock and the line can continue in automatic mode. As an option, it is possible to have the welding unit with n° 1 couple of motorized exit rolls (pinch-roll) with pneumatic lifting of the upper roll, n° 2 couples of motorized rolls (1 in entry and 1 in exit), with pneumatic lifting of the upper roll, and it is also possible to have as an option n° 3 sheet accompanying rolls
Technical data
| Maximum width | 200 | mm |
|---|---|---|
| Welding unit electrical absorption | 43 | amp |
| Material | Fe, galvanized, pre-painted, inox | |
| Material minimun thickness | 0,3 | mm |
| Material maximum thickness | 1,5 | mm |
| Shear | electric | |
| Blocking vices | included |
The PMC type roll forming line are characterized by: high quality (due to the high precision of the processings, of the assembly, and of the execution system), high performances (it is possible to work at high speed with very high precision), modularity (the insertion of new modules to increase the number of available forming stations is always possible), ruggedness (the heads are made completely of steel) and simple and fast regulations (possibility to have a rapid change of the rolls).
Plant to cool the just welded tube. It is placed after the welding zone and is made up of a welded structure on which a tank is positioned. Inside this tank there are nozzles which spray the cooling liquid on the tube.
It is in the final part of the line and carries out the flying cut to measure (the roll forming line does not stop). The movement is through a hydraulic unit and electric motor. It includes the final cutting die made especially for the requested profile to have an extremely precise shear without product deformation. This solution increases considerably the productivity.
The whole electric installation is intended here. Electric cabinet, cable channels, control desk and software for the management of the line parameters, all according to the highest standards of quality and efficiency.
L'impianto idraulico è necessario nelle operazioni di taglio e nelle unità idrauliche di punzonatura o scantonatura. È composto dalla centralina (di potenza tale da soddisfare tutte le lavorazioni), dai collegamenti meccanici (tubature e valvole) e dal software di controllo e gestione.
Series of wire mesh, infrared photocells and sensors for the protection of the operators. They are installed on the line to avoid any accident that could cause physical damages to the operators