SU666011A1 - Chears for cutting-off the rods of reinforcement grids - Google Patents

Description

one

The invention relates to the processing of metals by pressure, in particular, to the equipment for cutting and can be used for cutting the cores of reinforcing meshes in factories of reinforced concrete products and structures.

Scissors are known for cutting the cores of reinforcing grids containing two plates interacting with each other, one of which is rigidly connected to the body of the power cylinder and the other. pivotally with its stem, knife holders mounted on the plates and carrying knives, and the mechanism for rotating the plates in the form of supports, a hinge, and a pivot drive.

In the known scissors, the plates are mounted on the frame, therefore, the rotation drive has the load of the frame itself and the plates installed on it, which increases its power and reduces reliability. In addition, the knife holders are rigidly fixed on the plates.

The purpose of the invention — an increase in productivity — is achieved by

the supports are pivotally connected to the body of the power cylinder and the fixed relative plate with it, and the rotational drive is connected to the body of the power cylinder by means of a hinge mixed relative to the supports. In order to expand the range of cut rebar, the holders are installed with the possibility of adjusting movement along the plates and fixation on them;

The invention is shown in the drawing.

FIG. 1 shows scissors, general view; in fig. 2 - the same, section A-A of FIG. 1; in fig. 3 - the same, reading BB; FIG. 2.

The shears contain two interacting plates 1 and 2, a power cylinder 3, the casing of which is connected to the plate 1, and the brush 4 is pivotally connected to the plate 2 moving along the plate 1, the cutter bars 5, 6 mounted on the plates 1 and 2 with the possibility of adjusting movement along them and carrying

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knives 7, 8, clamps 9 of knife holders and plate rotation mechanism. The knife holders 5, 6 move along the guides 10, 11, fastened respectively on the plates 1 and 2, the latch 9 of the knife holders is designed in the form of a wedge. To increase the reliability of fixation, notches 12 are made on the interacting surfaces of the wedge 9 and guides 1O, 11. The mechanism of rotation of the plates is in the form of supports 13, 14 pivotally connected to the body of the power cylinder 3 and the plate 1 fixed relative to it 15 in the form of a power cylinder connected to the body of the power cylinder 3 by means of a hinge 16 displaced relative to the supports 13, 14. The latter are located in the plane of the blades.

Scissors work as follows.

For sections of the rods 17 of the grid with a pitch between the cut rods of the knife holders 5 of the fixed knives 7, they are installed and secured with the aid of an Elastic wedge 9 on the guide Yu of the fixed plate 1 in the immediate vicinity of the rods being cut.

The knife holders 6 of the movable knives 8 are secured with wedges 9 on the guide 12 of the movable plate 2 so that the distance between each successive pair of movable and fixed knives 7 and 8 is greater than the value of aHjaMeT pa of the cutting rod. Such an offset of the knives provides a reduction in cutting effort by successively cutting rods.

When feeding the reinforcement mesh, the scissors are held so that the plates 1, 2 are parallel to the plane of the mesh and it moves freely over the knife holder 5, 6.

For sections of the rods 17 of the grid, the shears are rotated on supports 13, 14 by a rotating drive 15, the planes of the plates 1 and 2 are perpendicular to the plane

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grids, while the rods 17 are located between the knives 7 and 8. Then, using the rod 4 of the power cylinder 3, they move plate 2 and holder 2 with knives 8 mounted on it, alternately cutting the rods 1 7 of the grid.

For sections of the grid rods with a modified pitch for fixing the knife holders 5, 6 with knives, 7, 8 on the plates 1, 2, they are changed in the manner described above in accordance with the modified pitch with between the cut rods 17,

Scissors are simple in design and provide a cut of grids with different pitch between cut rods and are easily embedded in automatic lines for the production of rebar

Claims (2)

1. Scissors for cutting rods of matrices containing two plates interacting with each other, one of which is rigidly connected to the body of the power cylinder. A friend is pivotally connected to his rod, knife holders mounted on plates and carrying knives, and a mechanism for rotating the plate in the form of supports, a hinge, and a turn actuator, differing in that. That, in order to increase productivity, the supports are pivotally connected to the body of the ram and the fixed plate, and the rotational drive is connected to the body of the ram by means of a hinge offset from the poles. 2. Scissors according to claim 1, characterized in that, in order to expand the range of rebar to be cut, the knife holders are installed with the possibility of adjusting movement along the plates and fixing relative to the latter .. Sources of information taken into account in the examination 1. Application No. 236441D, according to which the decision to issue the author's testimony was made.