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[CN 201610524486.8] Title of fine blanking press: application number of fine blanking press: CN 201610524486.8 applicant: fayentur international holding co., ltd. application date: 2016-7-5 patent type: invention application for a fine blanking press, including head section, base section, tie rod and column. The ring tooth cylinder is designed as a core body, on which a separate scraping/pushing cylinder with scraping/pushing piston is arranged, the reverse holding piston in the main piston is equipped with an extrusion piston, the scraping/pushing piston and the extrusion piston are respectively equipped with pressure chambers, the scraping/pushing cylinder/pushing cylinder/core is equipped with at least two opposed pre-compression pistons with piston rods on the head section, it is respectively guided in the head section vertically aligned with the adjusting nut into the pre-pressure cylinder chamber loaded with the fluid of the hydraulic system, and the piston rods are connected to each other by the adjusting cross rod, so that the adjusting movement of the pre-pressure piston and the piston rod exerts an external vertical adjusting force on the scraping/pushing cylinder/core, so that the internal thread of the adjusting nut is axially locked on or released from the external thread of the core, the main piston has a disk-like protruding working surface, which in the cylinder chamber of the base section divides vertically overlapping working chambers with a small stroke.
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