SU135328A1 - Drum Flying Scissors - Google Patents

Description

Known drum flying shears with a planetary gear; 1. scraps, providing parallel cuts, and a mechanism for cutting cuts by turning the loops through the sun gears of the planetary mechanisms of the heads that carry the iozhi. However, such scissors cannot be used to cut rolled metal to any given length.

In the described scissors, this disadvantage is eliminated by the fact that for cutting rolled metal and any given length, the cut-skip mechanism is made in the form of a toothed sector coupled to the shaft of solar HiecrepeH planetary mechanisms and received rocking motion from the eccentric jib through the double-arm, one of the eccentrics receives a constant rotation from the drive of the scissors drums and serves as a support for the two shoulders of the lever, and another eccentric is connected by means of a connecting rod to the end of the two shoulders rych n has an independent drive for its periodic rotation. In order to reduce the flywheel} 1t, parasitic gears are used in the transmission between the shafts of the solar ticks, and for unloading heads that carry the rainbow from the npiaMeiieHH torques with a shift of the axes of rotation of the heads relative to the cut plane.

FIG. 1 nzobrazhe} 1Y described scissors; in fig. 2 - installation diagram of the heads with knives. Drum flying knives consist of drums / and 2 rotating to the anti-sides, with planetary mechanisms 3 and 4 embedded in them, goat 5 and 5 with knives 7, skip cutting mechanism 8, turning heads 5 and 5, and a driving electric motor 9.

With each revolution of the drums / and 2, connected by a gear drive 10 and receiving a rotational movement from the electric motor 9, the planetary mechanisms 3} 4 provide j-parallel-parallel movement of the heads 5 and, as a result, the knives 7 with number 135328

do a parallel cut. The shafts 11 and 12 of the planetary mechanisms 3 and 4 of the firing of this are locked.

To skip the cut, the knives 7 must be removed from the position occupied by them when cutting, with the result that the rolled steel will pass between the knives 7. This rotation is carried out by the mechanism 8, the toothed sector 13 of which turns the shaft 14 through the gear wheel and through a gear 15 - shaft 12.

The gear sector 13 receives a swinging movement from eccentrics 16 and 17 by means of a two-arm lever 18. The eccentric 16 is connected by a reduction gear 19 with an electric motor 9 and performs a continuous rotational movement. The eccentric 17 has an independent drive from the electric motor 20 through a worm gear 2} and is driven into rotation only when a cut is required. The eccentric 16 is the support of the lever 18, and the eccentric / 7 is connected to the lever 18 by means of the connecting rod 22.

When the eccentric 17 is rotated to the lowest position, the knives 7 deviate from the plane of the cut, and they can occupy the initial position regardless of what position the eccentric / 5 occupies. The return of the knives 7 to the cutting plane can occur only when the eccentric 17 takes the uppermost position. Depending on how many revolutions of the eccentric 16 the eccentric / 7 will operate, the required number of cuts is performed.

The heads 5 and b are unloaded from the torques due to the fact that the axles 23 and 24 rotations of the heads 5 and 6 are offset relative to the plane of the cut. The parallelism of the knives 7 when cutting is required is ensured by practically stopping the planetary mechanisms 5 and 4 at the time of the cutting, so at this point the eccentric 17 is stationary and the eccentric. 16 passes the dead center position with an angular velocity several times smaller than the angular velocity of the drums 7 and 2.

The presence of non-redundant / 5 parasitic gears 25 reduces the flight moment of the rotating / scissors parts.

Subject invention

Claims (3)

1. Drum flying shears with planetary mechanisms that provide parallel cuts, and cuts skipping mechanism by turning the planetary mechanisms of the heads carrying the knives through solar cages, from the fact that, in order to cut, for example, rolled into any the specified length, the cut-skip mechanism is made in the form of a toothed sector, coupled with the shaft of solar bristles of planetary mechanisms, receiving a swiveling motion from two eccentrics by means of a two-arm lever, and one of the eccentrics is receiving constant rotation from the drive scissors drums and support medium is a two-armed lever, while the other cam is bonded via schatuna end with a two-armed lever and has an independent drive for its intermittent rotation. 2. In drum-type flying scissors according to claim 1, use parasitic gears in transmission between the shafts and solar bristles of the planetary mechanisms, in order to reduce the flywheel torque of the rotating parts, 3. In the drum flying scissors on PP. 1 and 2 use drums with displaced axes of rotation of the heads carrying the knives relative to the cutting plane for the purpose of unloading the heads from the torques.