SU600063A1 - Apparatus for unwinding thread from packages - Google Patents

Description

More than a few threads, which further form the harness 14, are jointly guided through the yarn receptacles 24 and 25. Near each thread guide 22, an interceptor 26 is provided, which serves to pinch and fix the end of the thread.

The device unwinding thread works as follows.

The first coil 7, subjected to unwinding, is fixed on the mandrel 6, which is located on the lowest position of the plate 5 (Fig. 5, 6). Conventional height of the center of the body ui of the package 10 is equal to hi. The spare coil 9 is also fixed on the mandrel of the rotating plate 5 and due to the inclination of the latter is above the coil 7. In this case, the center of gravity of the package 12 of the coil 9 has a conditional height hs. When the coil 7 (Fig. 3) is attached to the mandrel 6, the lever 18, which is pressed in the direction B by the spring 17 to the coil 7, engages the lower end row of the package 10 and, as a result of the action of the rod 16, compresses the spring 15, moves in the direction and opposite to the direction G. The free end of the rod 16 of the coil 7 extends against the un 19 of the disk 13 when extending, preventing the plate 5 from turning in direction D (FIGS. 2, 4 and 5), and the ratchet 20 prevents the plate 5 from turning in the opposite direction. The spare coil 9 is likewise secured by extending its rod 16 (Fig. 4). The end of the yarn 27 of the package 12 of the spare coil 9 is fixed in the interceptor 26.

When the unwinding of the package 10 of the coil 7 comes to an end and several turns remain, the lever 18 loses the point of support and retracts several free turns of the thread, and the rod 16 of the spare coil 9 moves with the help of spring 15 in the direction of G. Thanks to the fact that the center of gravity az tends to occupy the center of gravity ui, and since the rod 16 of the unwound coil 7 no longer abuts against the stop 19, the plate 5 under the influence of the gravity of the new package 12 rotates in the direction D until the rod 16 of the spare coil 9, rests on stop 19 Esto rod 16 unwound coil 7. When the plate 5 is rotated, unwound coil 7 moves to the second spare coil 8, and coil 8 to the place that coil 9 used to take. When moving the coils, the thread from the second spare coil 8 and the thread from the coil 9 mutually perereshrivatsya and the thread 21 from the coil 7 under the influence of friction snatches the thread 27 from the coil 9 and pulls it into the thread guide

22. As a result, after the complete unwinding of the first package 10 in its place, the forging 12 moves and begins to unwind without operator intervention. At the same time, the operator simultaneously serves a lot of package holders, alternately approaching each one, to rotate column 1 in the E or G direction, to remove 5 empty coils from each plate and to load a new packaging coil, and also to touch the end of the unwinding thread

interceptor 26.

Supplying the package fixation mechanism with a spring-loaded rod and a spring-loaded lever, as well as mounting the node plate with an angle to the vertical, eliminates downtime for reloading the coils, which increases the device's performance, as well as simplifies its design and maintenance.

Claims (1)

Invention Formula A device for unwinding yarns with forgings, containing packer holders mounted on a rotary plate and mechanisms for fixing them, characterized in that, in order to simplify the design, each packing mechanism of the holder is provided with a spring-loaded rod mounted on the plate parallel to its axis of rotation, and a spring-loaded lever, hinged on the free end of the rod with the possibility of contact with the package, while the plate is located at an angle to the vertical and has mounting slots for the rods. Information sources, taken into account during the examination 1. USSR Copyright Certificate 59141, cl. B 65N 49/10, 1939.