Method of and a device for sorting pellets upon their molding in a preforming press

US4253811A · kind A · utility

Assignee

• Firma Wilhelm Fette GmbH · DE

Inventors

• Jurgen Hinzpeter · Schwarzenbek, DE
• Ingo Schmidt · Schwarzenbek, DE
• Konrad Friedrichs · Sinzig, DE

Key dates

• Filing date: Jul 13, 1979
• Grant date: Mar 3, 1981
• Expiry date: Jul 13, 1999

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B30B15/32
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A sorting device for use in connection with a preforming press having a rotary die disk and a punching station cooperating with the disk to mold pellets, includes an electromagnetically operated guiding partition movable between a lower deviating position and an upper pellet passing position; an electronic measuring circuit for measuring the maximum compressing force exerted by the punch; an electronic control circuit for evaluating the applied compressing force and for activating the guiding partition; a first proximity switch cooperating with the punch for activating the control circuit at the moment of application of the compressing force and an electronic time-setting circuit activated by a second proximity switch and cooperating with the control circuit to adjust the instant of activation of the latter in response to the speed of the die disk and to the actual position of a complete pellet relative to the deviating partition.