SU562222A3 - Method of making cores - Google Patents

Description

occupied by the central unit of the corrugated in the initial and working positions, the general form; on

FIG. 6 is a diagram of the bending and preliminary approaching of the workpiece; in fig. 7, 8 - middle corrugating unit in the traveling and working positions; in fig. 9 and 10 - the last corrugating unit also in the initial and working positions.

The sequential chip contains a whole series of consecutive tools for trimming the edges, punching the slots, straightening, cutting off the workpiece and stripping the cut point, crimping the workpiece, bringing the corrugations together and calibrating. The knives 1 for trimming the edges of the coil strip 2 are located on both sides relative to the longitudinal axis of the skirt at a predetermined distance from each other. The length of the knives 1 is equal to the length of the workpiece to obtain a core. Punches 3 for gaps in the section of the coil strip have a rectangular cross section, and one of them is located on the longitudinal axis of the strip (coil strip), and the others are arranged symmetrically on the set gradually decreasing distance from the axle of the strip to its edge. The width of the punches also decreases from the longitudinal axis of the chip to its edge. The punches 3 are mounted on the movable top plate 4 and interact with the dies fixed on the bottom plate 5. The regular plates 6 are mounted on the plates 4 and 5 and have a length equal to the length of the section of the coiled strip on which the edge is cut and the width that exceeds the width of this section . Guillotine shears 7 for cutting the workpiece 8 from the rolled strip 2 contain movable and fixed knives fixed respectively on the plates 4 and 5. Cut off the workpiece 8 (Fig. 3) falls onto the fixed plate 5 and is transferred by the feeder 9 to the corrugating units 10-12. On the feeding mechanism 9 is mounted a stripping unit 13 of the workpiece. The corrugating unit 10 (FIGS. 4, 5) forms corrugations in the central part of the workpiece and is made in the form of five dies 14-16 and five dies 17–19, the length of which is longer than the length of the workpiece. The matrix 14 is rigidly fixed on the bottom plate 5 and is made with two protrusions 20 of a triangular shape and one hollow 21 (in Fig. 4, 5 a half of the corrugation unit is shown). The dies are horizontally displaced with respect to the fixed matrix 14. The dies 15 are triangular in shape, and the dies 16 have one shaped forming surface 22 and the other is flat 23. The punch holders 24-26 consist of three sections, two of which 25, 26 carry each of two punches 18, 19. A third section 26 is fixedly mounted on the top plate 4 and forms a cylinder in which the punch holder 25 moves, also forming a cylinder for moving the punch holder 24 therein. Moving the punches

is carried out by compressed air supplied through channel 27. In the initial position, the punches 17-19 are arranged in steps. Crimping unit 11 is made similar to the node

10 and comprises a die of 28-30 and a die of punches 31-33. The matrix 28 | pepo} is fixedly mounted on the plate 5 and, besides the two forming protrusions 34 of a triangular shape, it has two guiding protrusions 35 which are

continuation of the protrusions 20 of the matrix 14. Matrix 29, 30 are made similar to the matrix 15, 16. The punch holders 36-38 are made similar to the punch holders 24-26. Punch holder 36 carries two punches 31

triangular shape. The corrugating unit 12 is made similarly to unit 11 and contains the matrix 39-41 and the standard punches 42-44. The matrix 39 also, in addition to the two forming protrusions 45, carries two guiding protrusions 46, which are extensions of the protrusions 35. The matrices 40 and 41 are made similarly to the matrices 15, 16 and 29, 30. Poopsons 42-44 are made similarly to nuansons 31-33. But punches 43, except forming

the protrusions 47 have additional protrusions 48. The stamp also contains a node 49 of the final approaching of the corrugations and the calibrating node 50 in the form of a cylindrical die.

The core is manufactured as follows. The coil strip 2 is fed to the chip, where in the section of the coil strip equal to the predetermined dimensions of the workpiece, the knives 1 form side edges. Then this

the portion of the coil strip is fed under the punches 3, and the next portion of the coil strip is fed to the knives 1. The punches 3 cut twenty-five slits on the workpiece, the middle slit is located on the longitudinal axis of the coil strip, and the others are located symmetrically at a given gradually decreasing distance from the longitudinal axis of the coil strip to its edge (Fig. 3). The width of the slots also decreases from the longitudinal axis of the coiled strip 2 to its edge. After cutting the gaps, this section is fed to the correct plates 6, where it is ruled, and the subsequent sections of the coil strip are respectively fed to the knives 1 and the punches 3. Then

this area is cut off from the coiled strip with guillotine shears 7 and cleaned with a stripping unit 13, obtaining a blank 8 (Fig. 3). The blank 8 (Fig. 3) is equal in length to the length of the core to be made and has longitudinal slots 51-75 separating the blank 8 into plates 76 interconnected by not cut sections 77. The width of plates 76 is chosen such that after the corrugation of the blank 8 along slots 51 -76 and

the final convergence of the corrugations the resulting core had a cylindrical configuration. Subsequently, the blank 8 is transferred to the corrugated core 10, where its central portion is corrugated. Blank 8

stacked in this node 10 so that the average

the slot 51 coincides with the top of the punch 17 and the trough 21 of the matrix 14. When the plate 4 moves down, the punch 17 reaches the workpiece 8 along the middle pheli and begins to press it into the trench 21 of the matrix 14, while bending. When the punch 17 of the workpiece 8 is reached, its punch holder 24 begins to move in the cylinder of the punch holder 25. If the middle slot 51 reaches the bottom 21, the adjacent slots 52, 53 coincide with the projections 20 of the die 14. When the punch holder 24 of the punch 17 begins to move relative to the punch holder 25, then the punches 18 contact the workpiece 8 through the slots 52 and 53 and begin to bend the workpiece along these slots. Since the matrices 15 are spaced from the matrix 14 at a certain distance, no bump is yet obtained. Punches 18 begin to bend the workpiece 8 when the die 15 is moved towards the die 14. The punch holders 25 begin to move relative to the punch holder 26 and the punches 19 begin to bend the workpiece through slots 54, 55 while the dies 16 are moving and preliminary convergence of the corrugations. After completion of the corrugation of the workpiece 8 through slits 51-55, the punches 17-19 return to their original position. The blank 8 is transferred to the next corrugating unit 11, the corrugations, on the tops of which slits 52, 53 are located, coincide with the guiding protrusions 35 of the matrix 28, and the slits 60, 61 coincide with the tops of the dies 28. The punches 31 are made so that with the plates located between slots 58, 60 and slots 59, 61, ensuring that the slots 60 and 61 coincide with the vertices of the dies 28, and do not always exert a bending force on the workpiece. The operation of the punches and dies of the corrugating unit I is similar to the operation of the punches and dies of the unit 10. After the corrugation of the two middle sections is finished, the workpiece 8 is transferred to the corrugating unit 12, and the corrugations, at the vertices of which the slots 52, 53 are located, coincide with the guides 46. Work the corrugating unit 12 is similar to unit 11. But since unit 12 corrugates plates, the width of which is much smaller than the plates corrugated by node I, when the workpiece is welded in slits 70 and 71, the outer parts of the workpiece are raised. Therefore, the protrusions of the 48 punches 43 provide capture

the rest of the blank with punches 44. The punches 44 together with dies 40, 41 bend the blank, completing its corrugation. The pre-formed workpiece is transferred to the hzel 49 of the final approaching of the corrugations, and then to the calibrating assembly 50, from where the finished core is transferred to a storage bin or conveyor transporting the finished cores, for example, to the line of manufacture of ignition coils.

Claims (1)

Invention Formula A method of manufacturing cores comprising cutting a blank from a coiled strip, cutting out slots, one of which is located on the longitudinal axis of the blank, and the others symmetrically arranged on a predetermined gradually decreasing distance from the longitudinal axis to the edge of the blank, corrugating the blank along the slots and making the corrugations closer to each other. the fact that, in order to ensure the continuity of the manufacturing process of the core in a sequential chip, first in the section of the coil strip, to the specified dimensions of the workpiece, the side edges are cut, the gaps are cut down in the same area, which is then right, the cutting of the cut point is done after cutting the workpiece from the coil strip, the corrugation They are produced successively in sections, first corrugating the central section of the workpiece, then two symmetrical sections adjacent to the central one and then two extreme symmetric sections, moreover, an image. The corrugations in each section are also carried out sequentially, first formed by bending, the middle corrugation in the central section and then subsequently performed by bending and preliminary approaching side corrugations symmetrically located with respect to the middle corrugation, and in other symmetric sections, also first, with the help of a bend, receive simultaneously one symmetrically positioned one relative to the other extreme gofou adjacent to the already compacted area, and the subsequent symmetrical corrugations simultaneously form one in each section by means of the bend and prior approach, Calibration of the corrugations in the cylindrical filler is performed after final convergence of the corrugations. G. ::: Ij Joooo r D; yb @ S ood y Have 65 56 64 52 65 JS 56 Я 52 5 / JJ 55 57 53 51 63 55 67 6S 74 7Г; У 77 FIG. 3