SU864443A1 - Device for winding electric machine coils - Google Patents

Description

The invention relates to process equipment for winding pole coils of electrical machines and can be used in electrical engineering and electrical engineering. A known machine for winding pole coils of strip copper on a rib, comprising a frame on which a turntable is installed, having the possibility of circular rotation and movement in the direction of the longitudinal axis, and a split mandrel consisting of three parts, the central part of which is rigidly fixed on the table, and the extreme parts are equipped with axial movement mechanisms, including a pusher with pins, equipped with a drive. The length of the mandrel at the time of winding the protrusion of the coil is changed by moving the end parts of the mandrel with special devices containing, for example, a screw pair 1. The disadvantage of this machine is the need for manual labor to rotate the screw pair, as a result of which the worker can serve only one machine, which reduces labor productivity in the process of winding pole coils with protruding turns. The purpose of the invention is to increase labor productivity by automating the process of winding pole coils with protruding turns, which allows the introduction of multi-maintenance. The goal is achieved by the fact that, in the proposed machine, the drive mechanism for the axial movement of a part of the mandrel is made in the form of a ratchet wheel with a hub, on the end of which there are copier elements, a pivot arm on which the roller and a spring-loaded pawl are attached, contacting the ratchet wheel, a fixed gear mounted on frame and in contact with the roller, while the ratchet wheel and the swivel lever are installed coaxially with the pusher, and the pusher is made in the form of a sleeve, on the end of which are mounted copying elements in contact with the copier elements of the hub of the ratchet wheel. Figure 1 shows the proposed machine, the top view of figure 2 is the same, the side view of figure 3 and the drive of the mechanism for the axial movement of a part.

mandrels; figure 5 is the same, top view.

The machine contains a frame on which the rotary table 1 is installed. On the table 1, connected to the drive of the winding machine and a device for moving it in the direction of the longitudinal axis and subsequent rotation, a plate 2 is fastened on which is attached a mandrel defining the shape and dimensions of the windable pole coil and consisting of a central part 3 and two adjacent ones to it are end parts 4, each of which has a stepped profile in the rounded part. The end parts 4 of the mandrel are provided with methods for their axial movement, including a pusher 5 with pins and springs b, equipped with an actuator made in the form of a ratchet wheel 7 with a hub 8, at the end of which are mounted copying elements O of a pivot arm 9 on which the roller 10 and a spring-loaded pawl 11 in contact with the ratchet wheel, a fixed stop 12 mounted on the frame and in contact with the roller 10. The ratchet wheel 7 and the rotary reel 9 are mounted coaxially with the pusher 5. The pusher 5 is designed as a sleeve and, on the end of which there are mounted copying elements (G, contacting with copying elements On the hub of the ratchet wheel.

The machine works as follows.

When the table 1 moves, the lever 10 of each drive alternately bumps against the stop 12 and turns the ratchet wheel 7 through the pawl 11. moves alternately adjacent to the central part 3 of each of the end portions 4 of the mandrel, as a result of which the edges with the

step profile of the corresponding end portion, thus increasing the length of the mandrel. The end part is returned to its original position under the action of the spring b when the next rotation of the ratchet wheel 7.

The proposed machine allows to increase productivity by automating the process of winding pole coils with protruding turns.

Claims (1)

1. Semi-automatic for winding coils PNK-2, Presnensky engineering plant. M., 1964. W