SU95663A1 - The machine for bending from a flat grid of skeletons of colonies of rectangular cross section - Google Patents

Description

It is known the use of machines and mechanisms for bending individual elements of the frame of columns from a flat grid. However, the productivity of these operations is extremely low.

In the proposed machine for simultaneous formation of the first three edges of the frame, the middle part of the table in the longitudinal direction along its entire length is lowered and, together with the mesh fixed to the corner longitudinal rods, has a movement between the side-mounted rollers, which bend the lower rods of the table, and to form a fourth closing edge, the machine is equipped with a balancing mechanism with rollers at the end of the lever.

To set up the machine for bending frames of specified sizes, the section of the table is made of sliding width across the section, and the fixed stroke of the lowering jack screws is adjustable.

To secure the mesh on the descending part of the table, as well as to support the upper corner rods during bending with the balancing mechanism and subsequent welding, the machine is equipped with patch hooks driven by the overall hydraulic system of the machine.

FIG. 1 shows a machine in three projections; also in FIG. 2-vertical vertical section of the machine; in fig. 3 is a section through BB in FIG. 2

The machine is as follows. On the base 1 mounted roller table 2, forming the surface of the table and intended for feeding into the bending flat grid and issuing the finished frame. To set the grid on the table in the required for flexible position, clamps 3 are applied, which automatically turn off at the moment of feeding. The middle part of the table in the fractional direction along its entire length is made downward and is presented in the form of sliding beams 4 along the width of the beam.

No. 96563

which are fixed with hooks 6 which are controlled by hydraulic cylinders 5 and are intended to press the corner longitudinal bars of the net to the planes of the beams of the lower part of the table.

The latter moves along the bed guides under the action of screw houses.

When lowering the beams, the hooks of 6 tons of chickpeas are pressed behind the beams of the mesh}, the transverse rods of which run around at this time along the bending rolls 7 installed on the sides of the opening, as a result of which the two sides of the net are bent by 90 °.

The stroke of the descending part of the table is controlled by a limit switch 8. After the beam has been lowered, the booster rollers 9 turn on, making additional bending of the two first curved sides of the frame to a value slightly greater than 90 °, in order to eliminate residual deformations during the first bending operation.

Then, the action of the hydraulic cylinders 10 includes hooks // clamping the upper longitudinal rods, around which the closing side of the frame must be flexed, which is produced by a balance bar with bending rolls J2.

The bending of the closing side is also performed in two operations. The bend is produced by the balance bar / 5, and additional compression by an amount slightly greater than 90 ° is produced by the sprung rolls.

The rolls are fed by hydraulic cylinders 14.

After bending, the rectangular contour of the frame at the junction is welded by contact electric welding with a multipoint welding machine / 5.

Pressing the bars at the point to be welded is also produced by hydraulic cylinders. After welding, the welding machine rises, the grippers are turned off and the finished frame is fed to the level of the machine table and is transmitted along the roller table to any transport device.

The height of the frame is determined by the adjustable stroke of the sliding beam, and its width is controlled by the adjustable width of the sliding beam, which is achieved with the help of bolts 16 when moving the bending rollers 7 with the carriage 17, to which the hooks // and the hydraulic rollers 9 with hydraulic cylinders are attached.

Subject invention

1. The machine for bending from a flat mesh of rectangular column frameworks, characterized in that in order to simultaneously form the first three edges of the frame, the middle part of the table in the fractional direction along its entire length is lowered and along with the mesh fixed to the corner longitudinal rods has movement between the rolls arranged on the sides, which bend the transverse rods of the net, and the machine is equipped with a balance mechanism with rollers, which are bended at the end of the lever, to form a fourth facet.

2. The form of the machine but clause 1, characterized in that, to adjust the machine for bending skeletons of specified sizes over the cross section, the lowering part of the table is made sliding along the width, and the fixed stroke of the lowering jack screws is adjustable.

3. The form of the machine according to paragraphs. 1 and 2, characterized in that in order to secure the grid on the lowering part of the table, as well as to support the upper corner rods when bending with the balancing mechanism and subsequent welding, the machine is equipped with ring hooks driven from the overall hydraulic system of the machine.

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