SU904117A1 - Machine for applying insulation tape onto electric machine coils - Google Patents

Description

I

The invention relates to process equipment for the manufacture of coils, in which the length is many times greater than the width, and to be used in electrical engineering.

A known machine for badly insulating the case on the coils of poles of electric machines, comprising a frame with guides along which the carriage with a winding head in the form of a spool is mounted, a device for installing an insulated product, and a copier, which ensures a constant speed of the winding head p.

The disadvantage of this machine is the impossibility of its use for isolating narrow coils that need to be placed on the rim of the spool.

A known machine for isolating the coils of electric machines, comprising a winding head, made in the form of a spool with a gear ring, which is in engagement with the drive gear, and directed the device, made in the form of a driving roller, to the insulated product. When isolated, the coil moves uniformly along the axis of the spool t2j.

However, the known machine does not provide isolation of coils whose length is many times greater than the width, since in this case a decrease in the diameter of the spool leads to an increase in the number of layers of tape stock on it, which leads to an increase in the tension of the tape and its breakage. In addition, the need to place the coils not in the center of the spool, but at its equipment, entails the inconsistency of the pitch and the angle of the insulation around the perimeter of the coil.

The purpose of the invention is to expand technological capabilities by insulating coils, which are many times longer in length.

widths. i This goal is achieved by the fact that the machine contains a roller rotation speed regulator, made in the form of two gears meshing that are eccentrically located on parallel shafts, one of which is connected to the drive gear of the spool through gears, and the other hectare is kinematically connected roller, while the gear ratio with the water gear and the gear ring of the spool is equal to the gear ratio of the gear system, connecting the drive gear with one of the eccentrically located gears. Fig. 1 shows a winding head, a longitudinal section; in Fig. 2, a kinematic diagram of a rotational speed controller of a driving roller; The machine includes a housing 1 in which a tape holder 2 and a spool 3 with a gear ring, a speed-controlled device and an rotation speed controller are mounted. feed roller. The spool 3 is a box-shaped ring, between the toothed rims of which there are free rotating rollers around the circumference. The spool has a cut-out closed by the toothed sector 5 during operation. A cylindrical knife 6, a belt brake consisting of steel tape 7 covering a part of the spool and springs 8, a roller with flanges 9 serving to guide the insulated coil 10, are installed in the case and a drive shaft 11 with a drive gear 12, which engages with the toothed rim of the spool. A gear 13 is also mounted on the shaft 11. The gear 14 engages in gearing. The gear ratio of gear 12 to the gear ring of spool 3 is equal to the gear ratio of gear 13 to wheel 14. Wheel 14 is included in the block with gear 15 eccentrically located on the shaft of the wheels. The block rotates on the lever 16, which is pivotally mounted on the drive shaft 11. With the necklace 15 engages an eccentrically located gear 17 Shafts, on which the gears 15 and 16 are parallel. The force closure of the gears is carried out by a spring 18, one end of which is connected to the lever 16 and the other to the housing 1. 74 from the gear 17, the rotation is transmitted through the chain gear 19 and the gear bevel gear 20 to the drive roller 21. The eccentricity of the gears 15 and 17 is selected so that the change in the angle of the overlap of the insulation on the coil was minimal. A system including gears 13, a gear wheel 14 and two eccentric gears serves as a speed regulator for the drive roller. A machine for applying an insulating tape to the coils of electrical machines works as follows. The end of the tape from the roller installed in the tape holder 2 is fixed on the insulated reel 10. The coil is pushed inside the spool through the notch at the removed sector 5 so that the tape lies on the roller 4 of the spools 3, after which the notch is closed by sector 5 o. the guide roller 9 and to the driven roller 21. The drive turns on and the bobbin rotates. With each turn of the spool, one turn of the tape is wound on the spool, and at the same time one turn is wound on the spool 3. Due to the fact that the length of the shuttle is extended, which is much larger than the perimeter of the coil section, a supply of tape is created on the spool. After several turns of the spool, the tape is cut by the knife 6, and the remaining coil is insulated with tape from the stock on the spool. The gear 13 drives the block from the gear wheel 14 and the eccentric gear 15 to rotate. The gear 15 rotates the gear 17 unevenly. The lever 16, swinging on the shaft 11, provides the gearing of the gears 15 and 17. Due to the equal gear ratio of the gear 12 and the gear ring of the spool and the gear 13 to the wheel 14, the change of the gear ratio of the gear 15 to the gear 17 for the turn of the spool co. performs a full cycle. TaiftiM, the roller 21 moves the isolated coil faster when roller 4 of spool 3 approaches it, from which the tape runs off, i.e during the increase of the angular velocity of the roller relative to the cross section of the coil. The application of the proposed machine expands technological capabilities by insulating narrow coils, which have a length of

times greater than the width, since the insulated product is placed at the rim of the spool rather than along its axis, and the angle of overlap of the insulation of the coil as per the parimeter is kept constant, and the diameter of the spool can remain large.

Claims (2)

1. USSR Author's Certificate If 702 “4b2, H 02 K 15 / Oi, 1977. 2.Vinogradov N.V. Manufacture of electric cars. N., Energie, 1970, p. 2 "" 0-2 "" 2.