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
Metal organic chemical vapor deposition apparatus and method
Antenna apparatus and base station apparatus
Dual activator-support catalyst systems
Spiro fused 1-amino-piperdine pyrrolidine dione derivatives with pesticidal activity
MEMS substrates, devices, and methods of manufacture thereof
Communication system, transmission device, reception device, communication method, program, and communication cable
  Randomly Featured Patents
Reduced offset comparator
Optimal clearance retaining devices for adjustable wrenches
Ergonomic head-mounted image display apparatus
Apparatus and method of removing false color in image
Method for monitoring the position of a motor grader blade relative to a motor grader frame
Laminated light-transmitting fire-screening panel
Respirator for emergency air supply to a patient
Housing for audio-visual entertainment system or similar article
Electrical connector
Fiber-reinforced molded plastic roofing unit and method of making the same