Screw presses, which are ideally used as drop-forging machines on account of their design advantages, are restricted of their influence power by friction wheel drive (friction screw presses), and therefore screw presses with an influence power of from forty MN (Meganewtons) are frequently supplied, and screw presses with an influence of from eighty MN are typically provided, with a gearwheel drive, for which function the flywheel has external toothing and has motor-pushed pinions engaging in its toothed rim.
Background expertise prior electric fly hardware press is switched on when work repeatedly, and starting is frequent, and kurtosis usually appears in electric load; Dash current is big, and power issue is lower, and it is relatively extra severe that the motor feels hot; Temperature rise may be very excessive, and power loss is large, thereby the motor of selecting for use can also be very huge; With a view to prevent that motor from burning out, additionally to use air blast within the cooling of ceaselessly ventilating of entire working time, whole energy of motor of set up is large; As a result of the required complete power of every run are all obtained by electrical community in moment, therefore, very massive to the electrical community impression, specification is large more, and is also simply large more to the influence of electrical addition, the driving requirement of incompatibility Large Electrical fly press low-pace huge.
Shortly before the top of the downward stroke of the spindle 9 the rotational pace of the pump 27 and hence the rotational velocity of the flywheel 17 and the spindle 9 are decreased to zero during the rest of the stroke of the spindle 9. When the rotational velocity is lowered the four-method valve forty one is displaced from the rest position to the best and the line 42a is connected to a second strain-limiting valve 43. The strain which can be regulated by the stress-limiting valve 43 limits, by means of the strain-limiting valve forty two, the strain current in the pipeline 31 to the braking stress required for braking the flywheel 17.
The perfect known instance is a plastic injection molding machine: pellets of plastic are admitted at one finish; the barrel surrounding the screw is heated; and molted plastic discharges on the different end and is pushed into the injection molding die.
The electrical screw press as the key tools, Anyang forging press company can supply the forging production line for the purchasers, embody cutting gear, heating gear, preform forging tools, forging robots, Trimming tools and built-in system and many others.