Patent · US Expired

Pregripper in a sheet-fed printing machine

US5398607A · kind A · utility

5Cited by

9References

10Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Andreas Fricke · Eberbach, DE
Burkhard Maass · Heidelberg, DE
Jurgen Rautert · Heidelberg, DE

Key dates

Filing date	Oct 8, 1993
Grant date	Mar 21, 1995
Priority date	—
Expiry date	Oct 8, 2013

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H25/16
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A pregripper configuration in a sheet-fed rotary printing press feeds single sheets to a rotating cylinder. A cam drive includes a main cam and a roller lever which pivots about a frame-fixed shaft. A lever mechanism, which is articulated to the roller lever and a pregripper pivot arm, transmits the motion of the cam-following roller lever to the pivot arm. The pivot arm is also pivoted about a frame-fixed shaft. In order to compensate for play in the lever mechanism, a pretensioned spring is disposed between an attachment point on the roller lever and an attachment point on the pivot arm. In one embodiment, the pretensioned spring extends approximately parallel to a rigid link connected in articulated fashion between the roller lever and the pivot arm. In another embodiment, the spring is attached to a compensating cam drive.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.