SU426782A1 - DEVICE FOR MAKING WIRE NETWORKS - Google Patents

Description

This invention relates to the field of fabricating meshes by resistance welding.

A device for making grids is known, comprising a rotary table with welding heads mounted above it, mechanisms for feeding and stacking elements to be welded.

The purpose of the invention is to reduce the laboriousness of manufacturing the grids from spring threads when using patterns.

In the proposed device, radially arranged beams are placed above the template plane; along each of them, mechanisms for forming clutches on spring wires of their intersections are mounted respectively, including a cutting mechanism made of leites and bending of the workpiece with fixing the resulting clutch on a spring thread, laying mechanisms radial threads, made in the form of fixed uniformly along the length of the radial beam and in pairs with a gap of connected flat guide rails, on one pair of which the groove is made in the shape of m fty mechanisms stacking ring threads and welding heads.

FIG. 1 shows the described device, general view; in fig. 2 - turntable with a drive and templates; in fig. 3 - the mechanism for forming and laying the ring filaments; in fig. 4 - punching unit

and crimp punches; in fig. 5 - the mechanism for laying the radial threads and its cuts; in fig. 6 is a mechanism for capacitor welding.

The device comprises a rotary table 1 with a drive 2 of its rotation. A template 3 is installed on the table, in which grooves are laid slings, and on the table axis 4, radial beams 5, 6, 7 are fixed, on which are installed the radial laying mechanism 8, the mechanism 9 for forming and laying ring filaments and the mechanism 10 for capacitor welding.

To carry out the welding of the spring threads at their intersections, they form couplings by cutting the blank from the tape and bending it with subsequent fixing on the thread. The rotary table actuator 2 / has a worm gear reducer 11, and bevel gears 12, a cam shift clutch 13 and a pneumatic cylinder 14 form a shift reducer.

On the lower plane of the table there is a copier 15, made in the form of a plate with holes, where the lock 16 of the fixing device 17 falls, and the end of the lock is made in the form of a cam, which allows the inertial masses of the table to be extinguished.

The radial filing mechanism 8 (Fig. 5) has flat guide bars J8 connected in pairs and evenly located on the radial beam 5. One pair of bars has a groove 19, and at least two pairs of guide bars have pneumatic cylinder 20, lever 21, pualson 22, forming the ejection mechanism.

The mechanism 9 for the formation and laying of the annular threads (Fig. 3) is provided with spring-loaded coils 23, guiding them with brook strips 24 mounted on the radial beam 6. To the brook guide / plate Ikm 24 1 stitching 1 or 2 hydraulic bar 25, cont with one ends of the hinge levers 26, the other ends of the levers are in contact with the cutting 27 and crimp 28 punches. In addition to the above, on the guide bars 24, the feed mechanism 29 for the punches of the metal tape 30 is fastened.

The capacitor welding mechanism is mounted on a radial beam 7, to which the camshaft 31 is attached, which is in contact with the hinged levers 32, having adjustable loads 33 and a pair of welding electrodes 34.

The device works as follows. A template 3 is mounted on the rotary table /. Through the worm gearbox L, rotation is transmitted to bevel gears 12, one of which rotates freely on the shaft.

The fixing device 17 is constantly supplied with pressure, which presses the fixer to the plane of the turntable and at the same time the pneumatic cylinder M switches on the cam first coupling 13 and causes the table to rotate. The angle of rotation of the table corresponds to the pitch of the holes on the cam 15, into which the retainer sinks. As soon as the end of the retainer falls into the hole of the copier, the hole closes, supplying pressure to the pneumatic cylinder 14, and the opening of the pressure relief to the atmosphere opens, pneumatic cylinder 14 turns off the cam clutch 13 and the table, by inertia, moves the valve to the hole of the copier J5, the table stops at the desired position, while the grooves of the template 3 are under the mechanisms 8 for laying the radial threads, the pneumatic mechanism of the ejection is turned on, and the next radial thread is in the groove of the template 3, simultaneously The inclusion of the pneumatic cylinders 25 of the mechanism 9 for forming and laying the annular threads pressing the lever 26, which in turn pressing on the cutting 27 and pressing 28 pulalsons, occurs, cutting of the blank from the metal tape 30 and its area on the spring thread. After performing these operations, turn on output 2 turns on and the table moves.

on one given step.

Simultaneously with the radial n-ity laying mechanism 8 and with the mechanism 9 of forming and laying the ring filaments, the mechanism 10 for capacitor welding works in its position.

When the camshaft 31 rotates, the cams of the levers 32 in contact with it under the action of loads 33 fall into the grooves of the shaft 31, which causes the electrode 34 to lower until it touches the work piece. Moreover, one lever 32 simultaneously lowers two electrodes 34, i.e., two assemblies are welded. And since the grooves of the camshaft 31 are offset along, each pair of electrodes 34 are switched on in series with the required switching frequency.

Subject invention

An apparatus for making wire grids comprising a rotary table with welding heads mounted above it, mechanisms for feeding and laying elements to be welded, characterized in that radially arranged beams are placed above the template plane to reduce the labor of the bone for making grids from spring threads. , along each of which, appropriately mounted mechanisms for the formation of clutches on the spring threads at their intersections, including the mechanism for cutting out of the tape and bending the workpiece with fixing the resulting coupling on the spring wire, the mechanisms for laying the radial

threads, made in the form of fixed uniformly along the length of the radial beam and in pairs with a gap of connected flat guide rails, on one pair of which the groove is made according to the shape of the coupling, the laying mechanisms

ring threads and welding heads.

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