SU396203A1 - DRUM VOLTAGE SCISSORS - Google Patents

Description

one

The invention relates to the field of the metallurgical industry and can be used in rolling shops of steel mills.

Known drum flying shears with an eccentric cut-skip mechanism, containing eccentric axes with a common drive, on which the shafts of the drums are located.

In order to expand the range of cut lengths in the proposed scissors, the cut-skip mechanism is provided with an actuator connected to the shaft of one of the drums provided by the scissors system and made in the form of two moving elements, one of which is kinematically connected with the shaft of this drum eccentric axis of the other drum.

The drive of the cut bypass mechanism can be made in the form of a movable piston and a cylinder body, kinematically connected respectively to the shaft of one of the drums and to the eccentric axis of the other drum, and its over-piston cavity communicates with the battery through a valve connected to the drum shaft with a piston of the power cylinder, using a lever-cam mechanism and control system.

The case of the power cylinder can be installed with the possibility of movement in the guides of the battery, and its overpiston cavity communicates with the battery.

through a valve connected by a control system to the shaft of the drum connected to the piston of the power cylinder.

The moving elements of the drive can be made in the form of a core and a frame, kinematically connected respectively to the shaft of the single drum and to the eccentric axis of the other drum and interacting with the electromagnet roller 11 connected to the shaft of this drum.

FIG. 1-3 are schematically depicted

offered drum flying shears

with different drive options

The mechanism of the cut tolerance.

Flying shears contain bed / s

mounted shafts 2 drums 3, on which knives 4 are secured. Shafts 2 of the drums are interconnected by a gear 5 and through a gearbox with the engine 6. The shafts of the 2 drums are connected by carriers with

eccentric axes 7 and 8, interconnected by a gear 9.

The shaft 2 of the drum and the eccentric axis 7 is kinematically connected with the moving elements of the drive of the cut-skip mechanism.

The drive of the cut-off mechanism is made in the form of a movable body 10 of the power cylinder, hinges connected with a rack zatseilein //, set n:, on the eccentric axis 7 (FIG. 1).

The piston 12 of the power cylinder is connected to the lever 13 mounted on the crankshaft 14 and connected via a TV coupling 15 to the shaft 2 of the scissors drum.

The nadiorshiy cavity 16 is connected to the battery 17 via a claian 18, which is connected to the crankshaft 14 during knocking the wings 19 and the levers 20. The curtain 19 contains a cam 21 sitting on the shaft 14, an electromagnet coil 22, the measles 23 of which with a de-energized coil 22 pressed 24.

Iozhntsy contain a control system in which the sensor 25 with a gear rigidly connected with the shaft 2 gives an impulse to disconnect the circuit, and the sensor 26 to activate it.

In the second variant, the drive of the shear cut-off mechanism comprises the body 10 of the power cylinder, mounted for movement in the guides of the battery 17. The body 10 is connected to the eccentric axis 7 with the aid of the rack gauge 11 (Fig. 2).

The piston 12 of the power cylinder is rigidly connected to the fork 27, which is connected to the shaft 2 by means of a 28-pinch clutch mechanism 15.

The nadporschnev cavity 16 is connected with accumulator 17 through the clan; 18, which is rigidly connected to the core 23, pressed by the spring 24 with the electromagnet coil 22 de-energized.

In the third variant, the drive of the shear cut skip mechanism comprises an electromagnet coil 29 interacting with a cowl 30 and a rod 31 (FIG. 3). The anchor 30 through the pinion gear // is connected to the eccentric axis 7. The yoke 31 is rigidly connected to the fork 21, and by means of the crank mechanism 28 and the coupling 15 - to the shaft 2.

The principle of operation of the sheath is as follows.

Cutting irokata is produced at lengths equal to or multiple to the circumference of the drums of the knives.

When cutting the car by a length equal to the circumference of the drums with a box, the eccentric axes 7 and 5 are set to the position at which the knives 4 converge on each turn of the drums, and the clutch 15 disengages.

To increase the length of the workpiece, the cut skip mechanism is activated, and the drums with the knives fixed on them are turned and the angle is sufficient so that the knives do not cut into the metal.

For this purpose, a pulse is applied to activate the coupling / 5 connecting the piston 12 or the bore 30 of the drive with the shaft 2 of the drum, which is rotated due to the motion of the crankshaft 14 or the crank mechanism 28.

At the same time, a pulse is applied to the coil 22 of the electromagnet, and the valve 18 is closed.

When the piston 12 moves, the cylinder body 10 moves and, due to the rack-and-pin zapilsyn, the eccentric axis and, consequently, the shaft of the drum 3 rotates. Moving the movable element, made in the form of a core 30, and therefore moving the rack and pinion gear 11, rotates the eccentric axis 7 and the drum shaft -5 are accomplished by energizing coil 29, with the result that yoke 31 attracts measles 30.

To prevent a cut on the next whorl of the drums, the electromagnet wheel 22 receives an iteration, the claian 18 opens, the cylinder 10 of the hydraulic cylinder does not move, and the eccentric axis 7 does not turn.

In order for the measles 30 not to move, an impulse is applied to de-energize the coil. The proposed drive of the cut bypass mechanism can be applied to any type of flying shears.

Subject invention

Claims (4)

1. Drum flying shears with an eccentric cut-skip mechanism, containing eccentric axes associated with a common drive, on which the shafts of the drums are located, characterized in that extending the range of cut lengths, the cut skip mechanism is driven by a drive connected by a control system with a shaft provided by a knife and made in the form of two moving elements, one of which is kinematically connected with the shaft of this 6apa 6a ja, and the other with an eccentric one AXIEO another drum. 2. Drum flying shears according to claim 1, characterized in that the movable elements the drive is made in the form of a piston and a body of a power cylinder, kinematically connected, respectively, to the shaft of one of the drums and to the eccentric axis of the other the drum, and the cavity of the cavity are communicated with the battery through a valve connected to the shaft of the drum connected to the piston of the power cylinder, using a lever-cam mechanism and control system. 3. Drum flying shears on PP. 1 and 2, characterized in that the power cylinder housing is mounted for movement in the battery guides, and The piston cavity communicates with the battery through a valve connected to the control shaft of the drum connected to the piston of the power cylinder through the control system. 4. Drum flying shears according to claim 1, characterized in that the movable elements The drives are made in the form of a core of the PM, which are cypematically connected, respectively, to the shaft of one drum and to eccentric axis of the other drum and interacting with the coil of the electromagnet connected by the control system with the shaft of the drum.