SU429904A1 - DRUM VOLTAGE SCISSORS - Google Patents

Description

one

By bus. St. No. 398969 are known for drum flying shears for cutting rolled products in which high-speed shafts rotating in opposite directions, carrying the cutting tool, are connected to the shafts of the neck, are driven through lever mechanisms and are mounted eccentrically in the hollow bushings of the cut-through mechanism kinematically connected to the drive shaft gear stand.

The proposed blades are distinguished from those known in that they are equipped with an additional gear that changes the direction of rotation of the drive shaft of the cut pass mechanism and is mounted between gears mounted on hollow bushings and shafts of the cut pass mechanism.

This provides control over the cut length.

Pa figs. Figure 1 shows the kinematic diagram of the proposed scissors with a cantilever arrangement of the drums; in fig. 2 - the same, at the location of the drums between two beds; on fit. 3 is a block diagram of the cutting mechanism of flying scissors; in fig. 4- schemes of re, guliro: vanilla cut length prch the operation of the scissors in the cutting mode for each revolution.

Flying scissors (see Figs. 1, 2) containing g working stand 1, gear stand 2, gearbox 3 and electric motor 4. Gear stand 2 contains shafts 5, 6 with closing gears 7, 8 having a gear ratio equal to one .

The cut-skip mechanism includes gears 9 and 10, and, and 12, having different gearing gears, gear clutch 13, gear gears 14, 15 and 16, 17, 18, gear clutches 19, 20 that change the direction of rotation of the hollow sleeves 21, 22 connected by gears 23, 24. In the eccentric bores of hollow sleeves 21, 22, rotating in opposite directions are placed the high speed shafts of the drums 25, 26, bearing calipers 27, 28 for fastening the blades 29, 30. The shafts receive rotation from the corresponding shaft; 5, 6 gear stand 2 through two | Crank mechanisms 31, 3 2, in which / is the leading crank connected to the shafts of the gear stand 2, / 2 is the leading crank of the cut skip mechanism, / 3 is the driven crank of the 1P, / 4 is the connecting rod.

The rotation from the drive shaft 5 through the gears 7, 8, the two-crank mechanisms 31, 32 is transmitted to the drive shafts of the drums 25, 26 carrying the blades 29, 30 and rotating in opposite directions. About the drive shaft 5, through gear 9, 10 or 11, 12, as well as through gear 14, 15, rotation is transmitted to hollow bushings 21, 22 connected by gears 23, 24. The bushings rotate relative to the drums of the blades in the same direction , and relative to one another, in the opposite direction. The knives meet at a certain number of revolutions, depending on the number of skipping cuts, to produce a cut of moving steel.

To regulate the cut length, the rotating 21, 22 from the drive shaft 5 rotates through gear 9, 10 or M, 12, as well as through gear 16, 17, 18, as a result of which the sleeves rotate both with respect to the drums and

relative to one another in opposite directions.

Subject invention

Drum flying shears on author St. No. 398959, characterized in that, in order to regulate the cut length, they are provided with additional leverage that changes the direction of rotation of the drive shaft of the cut-through mechanism and mounted between gears mounted on the hollow bushings and shafts of the cut-through mechanism.

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