SU884046A1 - Automatic machine for manufacturing blanks of single-turn sections of electric machine windings - Google Patents

Description

one

The invention relates to electrical engineering and can be used for the manufacture of blanks of the SINGLE winding section of electrical machines.

A device for producing SINGLE winding sections of electrical machines is known, comprising a wire feeding and straightening mechanism, a wire cutting mechanism, a bending and loop forming mechanism, a locking mechanism and section 1 formations.

The disadvantage of this device is low productivity.

A machine for laying single-turn sections into grooves of electric machines is known, comprising, in a technological sequence, a wire feeding and straightening mechanism, an anism of wire blanks and crimping of their ends, a workpiece transfer mechanism from the cutting position to the bending position, the bending mechanism and the forming of the blank. a section including punches and a plunger; a mechanism for inserting a loop into the sectioning device; and driving these mechanisms 2.

The disadvantage of the machine is low productivity due to the sequence of operations during bending, forming and insertion of the loop.

The aim of the invention is to increase the productivity of manufacturing blanks of the SINGLE winding sections of electric machines.

This goal is achieved by the fact that the mechanism for bending and shaping the section blank contains a carriage driven by 10 reciprocating movements, a two-arm lever pivotally attached to the carriage, and a punch and pushers are mounted on the carriage, while one arm of the lever is pivotally connected to the punch, and the second is pivotally connected with the pushers, the VANs are located between the pusher, and the workpiece transfer mechanism from the cutting position to the bending position is designed as a cross mounted on a shaft equipped with its rotation drives and reciprocating movement, and provided with grippers.

FIG. 1 shows an automaton for making blanks of the SINGLE winding sections of electric machines in plan; general form; in fig. 2 - kinematic diagram of the automaton; in fig. 3.- the mechanism of transfer of the workpiece from the position of cutting to the position of bending and molding; in fig. 4 - the mechanism of bending and shaping of the section; in fig. 5 shows section A-A in FIG. four; in fig. 6 is a sectional view in FIG. four; in fig. 7 is a view along arrow A in FIG. 5. An automatic machine for manufacturing blanks of single-turn sections of windings of electrical machines contains a bending machine I (Fig. 1) and a correctly unwinding device 2 (Fig. 2). The correct-unwinding device 2 comprises a horizontal shaft 3 with a copper wire strapped onto it, two blocks of leveling rollers 4, feed rollers 5 connected to drive 6 and lever 7 for tension control of the wire. The bending machine (Fig. I) contains a frame inside which is placed the camshaft 8 (Fig. 2) associated with the actuator 9, and mechanism 10 (Fig. 1) of wire feeding and straightening is placed on the upper plate of the bed; mechanism for cutting blanks from wire and crimping the ends of the workpiece; mechanism 12 for removing the cut billet; mechanism 13 for transferring the billet from cutting position to bending and forming position; mechanism 14 for bending and shaping the section billet; and mechanism 15 for placing the blanks into a hopper. All of these mechanisms are kinematically associated with the camshaft 8 (Fig. 2). Mechanism 10 (Fig. 1). contains two blocks of leveling rollers 16 (Fig. 2) and feed rollers 17. Mechanism 11 (Fig. 1) contains two pairs of mutually perpendicular knives 18 (Sri. 2) whose wedge profile forms chamfers in the cut piece and drive these knives kinematically associated with the camshaft 8. The mechanism 12 (FIG. 1) is made in the form of a bar with a slit connected by means of the lever 19 (FIG. 2) with the camshaft 8. The mechanism 13 (FIG. 1) contains, for example, four pairs grippers 20, each of which is made in the form of a spring-loaded pivot arm 21 (phi 3) with a protrusion and a bevel and upper clamp 22. The grips 20 (Fig. 2) are fixed to KpectoBHHe 23, which is connected to the camshaft via the Maltese mechanism and gear train 23. The cross 23 is kinematically connected to the copier 24 by means of the lever 25. The mechanism 14 (Fig. I) contains stationary rollers 26 (Fig. 2), a carriage 27, a housing 28 (Fig. 4-7), in which the carriage 27 is mounted so that it can be moved, and two plates, upper 29 and lower 30, and the bottom plate has a groove 31 for accommodating a bending punch 32 and pushers 33, and in the top plate 29 a groove 34 is made l laying the cut piece 35. Between the upper plate 29 and the lower plate 30, stationary rollers 26 and molding punches 36 are installed. The carriage 27 is a slider with dove-type xBocrf guides in which three shields 37, 38 and 39 are mounted for vertical movement (Fig. . 4 and 6). On the rods 37 and 38, the pushers 39 are fixed, and the rods 37 and 38 are tightly connected to each other by a connecting strip 40 (Fig. 4 and 6). A bending punch 32 (Fig. 4 and 5) and a roller 41 are secured on the rod 39. The connecting strip 40 (Figs 4, 5 and 6), and consequently also the rods 37 and 38, with the push rods 33 fixed on them, is connected with the rod 39 by means of a double-arm lever 42 pivotally mounted on the carriage 27. The roller 41 is connected via a bar 43 and a system of levers 44 to the camshaft 8 (Fig. 2), and the guide bars 45 and 46 are also connected by a lever system to the shaft 8. Mechanism 15 contains table 47 with prisms 48 and 49 for installation of the accumulator 50 section blanks, mechanism 51 for orientation of the accumulator 50 blank OK sections and the pusher 52, interacting with the annular recess of the accumulator 50. The receiver 53, designed to fix and rotate the accumulator 50 one step, communicates with the camshaft 8 through a system of levers. A machine for manufacturing blanks of single-turn sections of windings of electric machines works as follows. The wire installed in the correctly unwinding device 2 (Fig. 2) passes through the feed rollers 5, the wire tension control lever 7, the mechanism 10 (Fig. I) of the feed and dressing and enters the mechanism 11, where the required size is cut. The cut billet is removed from the cutting zone by the mechanism 12. The mechanism 13 for transferring the billet from the cutting position to the bending and forming position is lowered, picking up the billet 22 with the spring-loaded pivoting levers 21 (Fig. 3), which is pressed by the upper clamps 22 to the protrusions of the lever 21. Simultaneously with the removal the cut piece from the mechanism 12 of the second pair of grippers 20 (FIG. 2) lowers the blank, cut in the previous cycle, into the mechanism 14 (FIG. 1), bending and shaping the section blank. After the bending loops, the mechanism 13 is raised and rotated 90 °, thereby preparing the next blank for laying in the bending zone. When the carriage 27 moves to the left, the slider 39 with the bending punch 32 is in the upper position, i.e. the working part of the bending punch 39 is between the upper plate 29 and the lower plate 30, and the rods 37 and 38 with the pushers 33 are in the bottom position The blank 35, laid through the groove 34 of the upper plate 29 by the mechanism 13 onto the lower plate 30, is pushed by the bending punch 32 between the upper 29 and the lower plate 30. At the same time, the blank 35, rolling between two stationary rollers 26, bends around the bending punch 32 and at the end of the stroke carriage 27 to the left is a loop with parallel ends. After stopping the carriage 27 in the left position, the molding punches 36 are reduced to the center, crimping the side of the loop along the profile of the bending punch 32. This forms the front part of the section blank loop.

After making the loop of the section, the molding punches 36 are consumed, the bending punch 32 is lowered, and the plungers 33 are raised. As the carriage 27 moves to the right, one of the pushers 33 (left in FIG. 4) pushes the section blank from the bending zone, and the second pusher 33 pushes the section blank made in the previous cycle into the slot of the accumulator 50 (fit. 2) located in the receiver 53.

After inserting the loop, the receiver 53 rotates one step, thereby preparing to insert the next loop.

Simultaneously with the manufacture of the sections, the accumulator 50 is fed to the left prism 48 of the table 37 and its angular orientation relative to the mechanism 14 is made.

After a set of complete loops has been set, the camshaft 8 stops and the pusher 52 moves the accumulator 50 ns receiver 53 to the right prism 49 of the table 47. The table 47 moves to the right, the pusher 52 pushes the oriented drive 50 into the receiver 53, and the accumulator 50 with the assembled set of blanks ne. The cylinder collides with the cylinder on the transport system (not shown in the drawing).

The invention makes it possible to increase the productivity of an automaton for manufacturing blanks of single-section winding sections of electric machines by simultaneously performing the operations of bending and shaping the workpiece of the section for transferring the workpiece from the cutting position to the bending and forming position.

Claims (2)

1. USSR author's certificate No. 612351, cl. H 02 K 15/06, 1978. 2. USSR author's certificate number 277921, cl. H 02 K 15/08, 1970. Yu . -J (RSH AL29 3S JD 39 3d 32 fuz.S