SU873285A1 - Device for manufacturing torroidal resistive elements - Google Patents

Description

(54) DEVICE FOR THE MANUFACTURE OF TOROIDAL RESISTANT ELEM-NTs

I

The invention relates to process equipment for the manufacture of electrical resistances and can be used in electrical and radio engineering industries.

The closest technical solution is a device for manufacturing toroidal resistive ones. elements, comprising a housing, on which the feed mechanism is installed. . wires, the mechanism are flexible, executed in the form of the movable levers fixed on one axis with squeezing rollers, a mandrel, squeezing punches and from a carved knife P.

However, the known device does not provide high-quality manufacturing of resistive elements.

The purpose of the invention is to improve the quality of manufacturing resistive elements.

The goal is achieved by the fact that, in a device for manufacturing toroidal resistive elements containing a wire feeding mechanism, a bending mechanism made in the form of compression punches and movable levers fixed on one axis with crimping rollers placed around the mandrel and a cutting knife, the movable arms are equipped with additional rollers, in the body there is a cylindrical groove, coaxially mounted on the mandrel, which is detachable with chamfers along the connector line and a flange on Vision .chasti, wherein the movable arms are mounted to

IS is rolled on with additional rollers along the cylindrical groove, and with crimp rollers along the shoulder on the movable part of the mandrel.

At 4mg. 1 shows a device

30 general view; FIG. 2 is a section A-A in FIG. one.

The device includes a wire feeder 1, a cutting knife 2 and

the mechanism is flexible. The bending mechanism consists of a body 3, on which a fixed part of the mandrel 4 is fixed, symmetrically to the mandrel 4 on the body 3, in the rails there is a carriage 5 with movable levers 6 fixed to no axis 7, In the bracket 8 of the body 3 coaxially fixed part of the mandrel A is mounted a movable part the mandrels 9. At the point of the movable part of the mandrel 9, there is a pinched guide pin that sits during bending in the nests of the fixed mandrel 4. At the ends of the movable levers 6, additional П and 12 crimping rollers are mounted on the axles. Chamfers 13 are provided at the ends of both parts of the mandrel and on the fixed flange 14. A cylindrical groove 15 is selected in the housing 3. A lower punch 16 is fixed on the carriage 3, and a movable punch 17 is mounted in the bracket 8. All movements are transmitted through an arm system from camshaft not shown. . A device for manufacturing toroidal resistive elements operates as follows. The resistive wire 18 is fed by the feed mechanism 1 to the bending mechanism up to the stop between the mandrel 4 and 9 and the pressing rollers 12, the knife 2 cuts off part of the wire. When moving up the carriage 5, the resistive segment clots into a toroid. Here, the crimping rollers 12, which are pressed against additional rollers in contact with the cylindrical groove 15, are wrapped around the collar 14. At this time, both parts of the mandrel 4 and 9 are in a compressed state. At the end of the movement of the carriage 5, punches 16 and 17 come up and finally form a toroid. Next, the punches, with the carriage, are retracted to the starting position.

The movable part of the mandrel is retracted and the toroid is curled on the finger K). It is taken out of the bending zone and dumped into the receiving tray after inserting the finger. 10 into the movable part of the half-shell 9. After that, both parts of the mandrel are closed and the work cycle is repeated.

The proposed device for the manufacture of a resistive element of a resistive string can improve productivity by combining the operations of winding and cutting toroids and excluding operations from the process.

edits toroid.

Claims (1)

Invention Formula A device for manufacturing toroidal resistive elements comprising a wire feed mechanism mounted on the housing, a bending mechanism made in the form of crimp punches and movable levers fixed on one axis with crimp rollers. placed around the mandrel and a cutting knife, characterized in that. that, in order to improve the quality of manufacturing resistive elements, the movable levers are provided with additional rollers, a cylindrical groove is made in the housing, coaxially mounted on a mandrel, which is detachable with chamfers along the connector line and a shoulder on with the possibility of rolling additional rollers along the cylindrical 5th slot, and crimping rollers along the shoulder on the fixed part of the mandrel. Sources of information taken into account during examination 1, vtorskoe USSR Certificate of application № 2716698, cl, and 01 C 7/00, 2) .01.79. figl (rib.2