BLOCK PIECE DIE Russian patent published in 2022 - IPC B21D28/14 B26F1/44 

FIELD: materials processing.

SUBSTANCE: invention relates to the processing of materials by pressure and can be used for punching sachets from mixpup materials, polypropylene, foil, and also polystyrene films. The stamp contains a punch, a matrix and a guide. The matrix and the guide have symmetrical shaped cutouts corresponding to the profile of the cut products. The punch is made with a longitudinal recess corresponding in shape to the shaped cutouts in the matrix and the guide. The punch from the side facing the matrix contains two symmetrical protrusions placed along its vertical side walls. The matrix is ​​made with grooves corresponding to said protrusions. On the surface of the matrix facing the guide, at least one pin is mounted to align with the mating holes in the guide. The guide has at least one through hole for fixing bolts intended for its detachable connection with the matrix. At the corners of the guide, through holes are made for detachable mounting of the stamp on the common bar of the stamping machine.

EFFECT: invention provides an increase in reliability and a decrease in the weight and size characteristics of the punching die.

1 cl, 5 dwg