Patent ID: 8191452

Claim:
A device for punching unfired, sheetlike ceramic substrates, in particular so-called green sheets, comprising: a receiving device, which has a substantially flat receiving face for a ceramic substrate, and in which punched holes are embodied; at least one die, which is disposed above an associated respective punched hole and has a shaft and an operative portion that extends through a constant diameter stripper opening, which is disposed in a stripper above the associated respective punched hole and extends to an outer face of the stripper facing the receiving face, with the operative portion having a first part with a diameter that is less than the diameter of the shaft by a multiple of the diameter of the first part, and greater than the diameter of the associated punched hole, and the first part of the operative portion, at its lower end, has a cylindrical punching portion whose diameter is somewhat less than the diameter of the punched hole and whose length is less than the length of the stripper opening; a drive mechanism, which is connected in driving fashion to the die in order to move linearly by a defined stroke and in the process to move the punching portion into the punched hole and out of it; and a die guide device, through which the shaft extends and which guides the die at its shaft.