SU452444A1 - Continuous cutter - Google Patents

Description

The invention relates to equipment for cutting strip and profile materials, in particular for producing strips, including profiles, with a shaped edge. Devices for continuous cutting are known with two rollers arranged in parallel, having shaped cutting edges, kinematically coupled with the help of a mechanism that synchronizes their rotation and contains a pair of toothed scaffolds, each of which is mounted on one of the rolls. Each wheel consists of two toothed disks fastened with the possibility of relative displacement, which makes it possible to adjust the thickness of the teeth and compensate for the side clearance of the Mesh. In such a device, the material being cut is not oriented relative to the cutting edges of the rolls. In order to eliminate this drawback in the proposed device, the rolls are provided with guiding elements, which are filled in the form of annular projections and grooves that together form a channel, the shape and dimensions of which correspond to the shape and dimensions of the material being cut, in particular, the profile or strip. FIG. 1 shows the cutting rolls, the cut; in fig. 2 - the cutting edges of the rolls in the scan. The device contains two cutting rolls mounted on parallel shafts 1. The rolls consist of hubs 2 and 3 fixed to the shafts, cutting disks 4 and 5 with curvilinear cutting edges 6 mounted on hubs 2 and 3, respectively, and rings 7 and 8, which are associated with cutting discs and serve to direct the material being cut. For the direction of the material, the cutting disks and rings have annular projections and grooves. The protrusions of the disk 4 and the ring 7 fixed on one shaft enter into the grooves of the disk 5 and ring 8 rigidly mounted on another shaft and together form a channel for guiding the material, and the diameters of the cutting parts of the disks 4 and 5 are larger than the diameters of the guide parts I

respectively, the rings 7 and 8 by an amount greater than the thickness of the material being cut.

The rings and discs are fastened with screws 9, which pass through one of the rings, one of the discs, a support ring 10 and a washer 11 mounted on the hub 2. Chevron gears are mounted at the opposite end of the hub, each of which consists of two helical gears 12 and 13. The gears 13 are fixed on the hubs by pins 14, and the gears 12 are connected to the gears 13 by means of screws 15 and pins 16 rotatably with respect to the latter. The fingers have cylindrical and conical parts with eccentrically located axes, - Each finger is mounted in a conical hole made in gear 12 and a through groove in gear 13.

The device works as follows.

The lower (in the drawing) shaft 1 through synchronous gears transmits a synchronous strike to the upper shaft. The strip or profile is guided into the channel formed by the protrusions and grooves of the cutting discs and rings. The cutting rolls rotate in different directions to move the material between them, and the cutting edges of both discs interact and cut the material along a curvilinear contour, the shape of which corresponds to KOHTjpy edges in the scan.

The cutting rolls of the proposed device can be installed on free spindles of a roll forming mill.

Subject invention

A device for continuous cutting with two parallel-mounted rollers having shaped cutting edges,

kinematically connected by a mechanism that synchronizes their rotation and contains a pair of gears, each of which is mounted on the axis of one of the rolls, characterized in that, in order to orient the material being cut with respect to the cutting edges, the rolls are provided with guide elements made in the form of annular protrusions and grooves forming together a channel with a shape and size corresponding to the shape and dimensions of the material being cut, in particular

profile or strip.

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