SU1399040A1 - Method of manufacturing the reinforcing cages and production line for effecting same - Google Patents

Abstract

1. A method of manufacturing reinforcing cages by welding transverse rods to longitudinal flat grids, characterized in that, in order to improve the quality of reinforcing cages, the longitudinal grids are installed in the welding zone at an angle of 28-35 ° to the transverse rods, the transverse rods are welded to the longitudinal grid, the frame is compressed, and the free ends of the longitudinal grids are folded to a 90 ° angle. between transverse rods and flat mesh. 2. Lines for the manufacture of reinforcement cages, containing welding heads installed on the base for welding with upper and lower electrodes, guides for longitudinal grids, mounted for lateral movement, 1P13m of stepping movement of the welded framework, and a table for laying welded cages, characterized by so that, in order to improve the quality of the reinforcement cages, it is equipped with a bending device installed in the welding zone, made as an additional frame and installed s on it supports for each longitudinal grid reinforcement cage driving straightening plate disposed on one side of supports, and drive racks located on the other side supports and to the longitudinal direction of grids 28-35 are fixed at an angle to the frame and provided with pinch rollers. (C (L oo with so

Description

The invention relates to mechanical engineering and may find application in the construction industry.

The purpose of the invention is to improve the quality of reinforcement cages.

FIG. 1 shows a line, a general view; in fig. 2 - resistance welding machine; in fig. 3 is a view A of FIG. one; in fig. 4 is a view B in FIG. one; in fig. 5 is a view of B in FIG. one; in FIG. 6 - section G-Y in FIG. five; in fig. 7 - reinforcement cage.

The line consists of a table 1 for longitudinal grids, a machine 2 for resistance spot welding, a device 3 for bending grids and a table 4 for laying finished reinforcement cages.

The machine 2 for resistance spot welding contains a frame 5 on which welding heads are fixed with the lower 6 and upper 7 electrodes. On frame 5, beams 8 with slots 9 are reinforced, in which brackets 11 are mounted on bolts 10, to which, in turn, guides 12 for longitudinal grids 13 are fixed at an angle of 28-35 ° In front of the welding heads, restrictive plates 14 with grooves 15, between which clamping rollers 16 are fixed. Between restricting plates 14 under rollers 16, limiters 17 with bevels 18 are mounted. The actuator 20, for example air cylinders. The drive for the step-by-step supply of the welded reinforcement cage is made in the form of a pair of pneumatic cylinders 21, on the rods of which the traverse 22 is reinforced with the pushers 23.

The device 3 for bending the longitudinal grids 13 into a vertical position comprises a frame 24 with the upper 25 and lower 26 beams.

On the upper beam 25, a rikhtoeochny plate 27, which is simultaneously connected by hinged levers 28 and a pneumatic cylinder 29 mounted on a frame 24, is hinged together. The levers 28 are hinged together by a thrust 30.

On the bottom beam 26, the supports 31 are reinforced, on which reinforcement cage 32 is fed. To the bottom beam 26, bending strips 33 are pivotally attached to the arms 34, the ends of which are the hinge

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but are connected to te 33, connected to pneumatic cylinder 36 fixed on frame 24. Between the straightening plate 27 and the lower beam 26, go through the chain of conveyor 37 with clamps for the welded reinforcement cage 32, the drive 38 of which is attached to the table 4 for laying finished reinforcement cages 32.

The manufacture of the reinforcement cage is as follows.

The longitudinal grid 13 is taken from the table 1 and placed in inclined under

angles 28-35 of the guide 12 of the machine 2 for resistance spot welding of reinforcement cages 32. The front ends of the grids 13 are driven under the pressure rollers 16 and delivered under the upper electrodes 7 so that the upper branches of the longitudinal grids 13 are located exactly in the center of the lower electrodes 6. In this case, the upper branches of the longitudinal grids 13 are placed between the constraints 17, the lower of which is made with a bevel 18 for the approach of the longitudinal grids, and the transverse rods of the longitudinal grids are installed between the limiting plates 14. The lower branches are longitudinal grids 13 are supported on the support plates 19 of the guide 12. Further, the transverse rods 39 are provided for welding them to the longitudinal grids 13. Thereafter, actuators 20 are activated electrode 7 and the pressing rods 39 occurs to the grid 13 and welding. Then, the actuators 20 of the electrodes 7 are turned off and the latter are raised, the actuator 20 for feeding the frames 32 operates. When the frames 32 move by a step, the grids 13 and rods 39 move by a step, and the process continues for the entire length of the grid 13.

After welding the reinforcement cage

32to the entire length of the longitudinal grid 13, the drive 38 of the chain conveyor 37 and the reinforcement cage 32 with the longitudinal grids 13 welded at an angle are inserted and mounted on the supports 31. The straightening plate 27 is activated, which lowers, crimps and aligns the frame 32 lying on the supports 31 Following this, pneumatic cylinder 36 and rails are engaged.

33 deform the longitudinal grid 13, bend them into a vertical position. Pneumatic cylinder 36 off, slats

33 return to the starting position. Plate 27 drives off, plate 27

it rises, oss trimming the welded reinforcement cage 32. Then the drive 38 of the chain conveyor 37 is turned on, and the finished skeleton is led out of the bend device 3 onto the table for laying the reinforcement cages 32, then the cycle continues.

The use of the invention makes it possible to manufacture high-quality reinforcement cages, because during welding the grids are arranged at an angle to the horizon, thereby allowing them to move in the welding zone unhindered, without hitting the welding electrodes and not deforming,

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Claims (2)

1. A method of manufacturing reinforcing cages by welding transverse rods to longitudinal flat grids, characterized in that, in order to improve the quality of reinforcing cages, longitudinal grids are installed in the welding zone at an angle of 28-35 ° to the transverse rods, transverse rods are welded with a longitudinal grid, compress the frame and the free ends of the longitudinal nets are bent to an angle of 90 ° between the transverse rods and the flat mesh. 2. A line for the manufacture of reinforcing cages, comprising welding heads with upper and lower electrodes mounted on the frame of a resistance welding machine, guides for longitudinal meshes mounted with the possibility of lateral movement, a stepwise movement mechanism of the welded frame and a table for laying the welded frames, characterized in that, in order to improve the quality of reinforcing cages, it is equipped with a device for bending installed in the welding zone, made in the form of an additional bed and installed on and there are supports for each longitudinal mesh of the reinforcing cage of the drive straightening plate, placed on one side of the supports, and drive rails located on the other side of the supports, and guides for longitudinal meshes are fixed at an angle of 28-35 ° to the bed and equipped with pressure rollers.