SU554107A1 - Device for welding reinforcing mesh - Google Patents

Description

one

The invention relates to the welding of meshes for the reinforcement of reinforced concrete structures and can be used in precast concrete plants and specialized plants producing reinforcing cages and meshes.

A device for welding rebar grids comprising levers with a groove rotatable in a vertical plane is known.

However, this device does not allow the fabrication of a grid with small pitch of transverse rods, and the levers provide unreliable fixation of the bar.

The closest to the proposed invention in its technical essence and the achieved result is a device for welding reinforcing meshes containing upper and lower electrodes placed on a frame, a grid feeding mechanism for a step, a transverse bar feeding mechanism and hinged levers closing the control circuit of the welding cycle.

A disadvantage of this device is the presence of a mechanism for synchronizing the movements of the carriage and the drive for feeding the transverse rods, and that the welding cycle occurs when the carriage is in the rear position.

The purpose of the invention is to increase productivity and simplify the design.

To do this, in the proposed device, the levers are spring-loaded from the bed, are installed with the possibility of rotation in a vertical plane, and have cutouts facing the feed rod of the transverse rods.

FIG. 1 shows the proposed device, the carriage in the extreme front position, the general view; in fig. 2 - the same, at the moment of the carriage movement to the electrodes; in fig. 3 - the same carriage in the rearmost position; pas figs. 4 - the same, the carriage at the beginning of the forward movement.

The device contains a frame 1, on which with the help of rods 2 power brackets 3 are mounted. On the brackets there are located lower fixed 4 and upper mobile 5 electrodes. The carriage 6 is mounted on the frame 1 with the possibility of a longitudinal reciprocating motion from the pushing actuator (not shown in the drawings). The feed mechanism 7 of the transverse rods 8 is mounted on the frame 1 above the carriage 6. On the carriage 6, there are spring-loaded clamps 9, which serve to interact with the transverse rods 8 welded to the longitudinal rods 10 of the welded mesh. The stops 11 are mounted on the rods 2, mounted on the frame 1. On the stops And using the fingers 12 are installed levers 13, having notches 14,

The initial position of the levers 13, in which the notches 14 face the mechanism 7 for feeding the transverse rods 8, is provided by the springs 15 and the latches 16 fixed to the stops 11. The rip switches 17 are fixed to the stops 11 and interact with the levers 13. The contacts of the switches 17 are sequentially located in the electrical circuit controlling the welding cycle.

In the process, at first, one transverse rod 8 is ejected into the notches 14 (see FIG. 1), and then the automatic operation of the device is activated. At the same time, the upper electrodes 5 descend, from which the levers 13 rotate, being carried along by the rod 8, and the carriage 6 begins at the same time to move toward the electrodes (see Fig. 2). Next, the carriage 6 comes to the extreme rear position, with the grips 9 coming behind the welded rod 8, and the next transverse rod 8 is ejected from the mechanism of feeding 7 (see Fig. 3). However, under the electrodes 5, i.e., into the notches 14, the next transverse rod 8 is not yet supplied, since it rests against the rotated arms 13. At this time, welding takes place and the electrodes 5 are raised, but the arms 13 remain in the rotated position, since they are held by the rod 8 welded to the rods 10 (see Fig. 4). Next, the carriage 6 moves forward (from the electrodes) and grips 9, moving the welded

the mesh, the welded abrasive 8 is pulled out of the notches 14, which causes the levers 13 to return to their original position under the action of the springs 15, and this allows the next transverse

the rod 8 is moved to the notches 14, i.e., under the electrodes 5 (see FIG. 1). Then the cycle repeats.

During each welding cycle, the levers 13, when rotated, release the rods of the limit switches 17, which causes the electrical control circuit of the welding cycle to close. This prevents the welding from starting in the absence or in the wrong position of the transverse rod under the electrodes.

Claims (1)

Invention Formula A device for welding rebar grids containing upper and lower electrodes placed on a frame, a grid feed mechanism per step, a transverse rod feed mechanism and pivotally attached levers closing the welding cycle control circuit, characterized in that, in order to increase productivity and simplify the design, the levers spring-loaded from the stapips, installed with the possibility of rotation in the vertical plane and having notches, pointing towards the feed mechanism of the transverse rods. 6 7 R N1 H