Resources Contact Us Home
Apparatus for a stepwise advancing of a web-shaped workpiece

Image Number 4 for United States Patent #5110026.

The crank assembly of the advancing apparatus is eccentrically supported in an intermediate shaft. This intermediate shaft is in turn supported in an oscillating slide. Accordingly, the oscillating movement of the slide is superimposed over such of the driving pivot of the crank assembly. The intermediate shaft includes a cam disk. Due to the cam disk the intermediate shaft oscillates in operation and causes in turn the oscillating movement of the slide, which oscillating movement proceeds oppositely to the oscillating movement of the driving pivot. The sum of these two movements in the zones of the end positions thereof is accordingly zero. Accordingly, the driving pivot is at rest over a prolonged time span. Due to this prolonged rest period between individual feeding steps, elastical deformations of working structures and of the workpiece being worked upon, can attenuate and fade out prior to the working proper, and at the same time the length of the advancing is not subjected to a change. Furthermore, any clamping elements for the clamping of the workpiece can be lowered more slowly against the workpiece such that a lower energy of impact is produced. Conclusively, the workpieces are not subjected to a plastic deformation. The apparatus finds application specifically in punch presses.

  Recently Added Patents
Liquid crystal panel and liquid crystal display
Rewriting branch instructions using branch stubs
Method and apparatus for establishing a media clip
Electric train drive control device
Data driver and liquid crystal display device using the same
Interconnecting virtual domains
Differentiated PSIP table update interval technology
  Randomly Featured Patents
Scouring pad
Hard disk recording apparatus
Storage device, storage method and computer-readable storage medium for storing video data
Modular assembly machine
Perfusion balloon angioplasty catheter
Reactor internals core barrel hole plug
Self-venting spool valve assembly
Fused heterocyclic derivatives as PPAR modulators
System for indicating the firing of a perforating gun