SU1282425A1 - Drum-type flying shears - Google Patents

Abstract

The invention can be used in rolling production for cutting small-size rolled products and allows increasing the cutting speed,. At the command of the cut, the engine turns the drum 3 and causes the gears 16, 17, 18, 19 to rotate. For one revolution of the shaft 15, the drum 3 with a knife makes one or several full turns. Through the linkage movement is transmitted to the wiring. When moving the wiring to the right, the wire falls under the knife and is cut. The acceleration and deceleration of the drum 3 takes several turns. This reduces the dynamic loads on the actuator turning the arrow and increases the rolling speed, 3 sludge.

Description

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The invention relates to the processing of metals by pressure and can be used in the rolling industry for cutting small section and wire products.

The purpose of the invention is to increase the productivity of the drum flying shears by increasing the cutting speed and enabling the cutting of the front and rear ends of the roll.

FIG. 1 shows a drum flying scissors; in fig. 2 is a view A of FIG. 1; in fig. 3 shows a section BB in FIG. 2

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having completed several full revolutions, accelerates to the speed of movement of the die, and cuts. When reverse movement of the wiring 9 to the left, the position of the knife and the wiring do not match and the wire passes the interdrum gap freely. In the acceleration and deceleration of the lower drum, the i-turns are thus retracted. After the engine 21 is stopped and the wiring is in its initial position, the EHIN scissors are ready for the next start-up cycle.

-Measurement designed for pr

The shears contain a bed I, in order to form a rotational movement

Secondly, the case 2 of the lower barban 3, carrying the knife 4, and the shaft 5 in. bearing supports 6 and 7. The lever 8 connects shaft 5 to wiring 9, and through a system of levers 10, П, 12 and 13, crank 14, driven shaft 5 and gears 16, 17, 18 and 19 with a drum, 3. Through the coupling 20, the entire system of mechanisms is connected to the engine 21. The bearing supports of the upper smooth drum 22 are mounted in the housing 23. By the coupling 24, the drum 22 is connected to the engine 25.

Scissors work as follows .-

Before the command to cut, the wiring 9 is in the leftmost position (Fig. 2), the engine 25 rotates and the smooth drum 22 rotates. The hire (wire) moves inside the wiring 9, Knife 4. stands vertically in the cut position.

Upon a command to cut, the engine 21 is automatically turned on, driving the rotation of the lower drum 3 and at the same time driving the chain of gear wheels 16, 17, 18, and 19, which implements a gear ratio that is a multiple of one, but not equal to it. - Thus, for one full revolution f of the driven shaft 15 with the crank 14, the drum carrying the knife makes пол full turns (where is the gear ratio from the wheels 16 to the wheel 19). Through cranks 14, a lever mechanism consisting of flicks 10, 11, 12 and 13 is set in motion. Lever 10 pumps shaft 5 in supports 6 and 7, and through lever 8 this movement is transmitted to wiring 9. When wiring 9 moves to the right, wire 26 gets under the knife 4, after the drum 3, so20

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of the driven shaft 15 to the swinging movement of the wiring, can be synthesized to double: either so that for the turn of the shaft 15 one cut is made, or more so that every half-turn of the wap is cut. In the first case, the movement of the wiring to the right and to the left should be asymmetric, and in the second, the half of the cycle should be symmetrical. .

The crank-lever mechanism both bakes the asymmetrical swing of the wiring 9 and the cutting cycle for a full rotation of the shaft 15.

Formula

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the invention

Drum flying shears containing the base, two shaft-connected rotational rods with drums mounted on them, at least one of which has a knife attached, and n wiring. mounted with the possibility of moving its output end of STI-SPEED, perpendicular to the plane of rotation of the knife, and kinematically connected with the shaft of one of the drums, characterized in that, in order to increase productivity by increasing the cutting speed and ensure the possibility of cutting off the front and rear ends of the blade , the kinematic connection between the drum shaft and the wiring is in the form of a gear transmission, the gear ratio of which is a multiple, but not equal to one, and the mechanism for transforming the rotational motion of the shaft into movement of the wiring associated with the driven gear wheel.

having completed several full turns, accelerates to the speed of the wire, and cuts. When reverse movement of the wiring 9 to the left, the position of the knife and the wiring do not match and the wire passes the interdrum gap freely. In the acceleration and deceleration of the lower drum, the i-turns are thus retracted. After stopping the engine 21 and posting in the initial position, the scissors are again ready for the next start cycle.

-Mechanism designed to convert rotational motion

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of the driven shaft 15 to the swinging movement of the wiring, can be synthesized twice: either so that for the revolution of the shaft 15 one cut is made, or so that every half-turn of the wap is cut. In the first case, the movement of the wiring to the right and to the left, which is asymmetrical in speed, must be ensured; .

Crank-lever mechanism provides asymmetric swing wiring 9 and the cutting cycle for a full rotation of the shaft 15.

Formula

the invention

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Drum flying shears containing a base, two coupled to the drive shaft rotation with drums mounted on them, at least one of which is fixed a knife, and about the wiring ,. mounted with the possibility of moving its output end in W110 SPEED, perpendicular to the plane of rotation of the knife, and kinematically connected with the shaft of one of the drums, characterized in that, in order to increase productivity by increasing the cutting speed and ensure the possibility of cutting the front and rear ends of the roll, The kinematic connection between the shaft of the drum and the wiring is made in the form of a gear transmission, the gear ratio of which is multiple, but not equal to one, and the mechanism for converting the rotational motion into la in a rocking motion wiring associated with the driven toothed wheel transmissions.

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Claims (2)

Claim Drum flying scissors containing a base, two associated with a shaft rotation drive with drums mounted on them, at least one of which has a knife fixed, and wiring mounted with the possibility of moving its output end in a plane perpendicular to the plane of rotation of the knife, and kinematically connected with the shaft of one of the drums, characterized in that, in order to increase productivity by increasing the cutting speed and making it possible to cut the front and rear ends of the roll, the kinematic the relationship between the drum shaft and the wiring is made in the form of a gear transmission, the gear ratio of which is a multiple but not equal to unity, and the mechanism for converting the rotational movement of the shaft into the rocking motion of the wiring associated with the driven gear wheel. I 282425 (rig. Phi. " 2 figure 3.