FIELD: machine building.
SUBSTANCE: method of cyclic screening of hole (25) of the work chamber during inserting of the blanks (201, 202) includes the following stages: blank (201) preparation on delivery device (10) going through the work chamber hole (25) to the located outside the work chamber (20) the first place (11.1) of blanks loading, and location of the fist screening element (21) at the first place (11.1) of blanks loading, or, if looking towards delivery direction; location of the second screening element (22), if looking towards delivery direction, downstream the second place (11.2) of the blanks loading; insertion of the first blank in the work chamber (20), and location of the first screening element (21) near the work chamber hole (25) or inside it by moving of the supply device (10); removal of the first screening element (21) from the work chamber hole (25), and its location, if looking in direction of delivery, downstream the second place of blanks loading by means of transportation device (30, 31, 32, 33, 34, 35); repeating of the last two stages in relation to other places of the blanks loading of the delivery device (10), and with appropriate successive replacement of the screening elements (21, 22). Besides the screening device is suggested for cyclic screening of the work chamber hole.
EFFECT: method improvement.
21 cl, 8 dwg
