DEVICE FOR LIFTING AND LOWERING OF THERMO-BLADE OF PACKAGING MACHINE Russian patent published in 2013 - IPC B65B61/00 B65B65/00 

FIELD: packaging industry.

SUBSTANCE: device comprises a frame consisting of a base 1 with racks 2 connected in the upper part with a bridge 3 and in the middle part with a table 4. Each rack 2 in its cross section has a U-shape and in its cavity there is a guide rod 5 which one end is mounted with the ability for displacement and fixing on the bridge 3, and the other end is fixedly secured to the base 1. On each rod 5, a slider 6 is mounted which is made in the form of an elongate cylindrical sleeve. The upper ends of the sliders 6 are connected to the plank 14. The sliders 6 and the plank 14 form a frame for mounting and moving the thermo-blade. On the racks 2 from the outer side the axes 7 are fixed on which the pulleys or sprockets 8 are mounted enveloped by belts or chains 9. On each rack 2 from its outer side a vertical guide 10 is fixed in the form of a pipe in which the counterweight 12 is movably placed which is connected to one end of the chain which other end is connected to the bracket 11 fixed to the lower end of the slider 6. Also in the lower part of the bracket 11 a magnet cup 20 is fixed, located with the ability of its contact with an electromagnet attached to the holder 22 which is rigidly mounted in the lower part of each rack 2 with the ability to adjust the height of the electromagnet relative to the frame. Each guide 10 is positioned alongside of the rack 2 and displaced from the longitudinal axis of the rack 2 to one of the longitudinal sides. In each rack a longitudinal slot is made in which the bracket 11 is located which is connected to the slider 6 and the cup 20 of the electromagnet.

EFFECT: invention provides simplified design, increased reliability of operation and simplified changeover to a different type of thermo-blade drive.

2 cl, 2 dwg