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A process is described for selectively blanking ceramic sheets from tape using die control logic such that the die life is prolonged and waste of material is minimized.
English (United States)
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Arrangement for Selectively Blanking Predetermined Lengths of Ceramic
Sheets from a Tape Using a Non Ionizing Radiation Scanning System
A process is described for selectively blanking ceramic sheets from tape
using die control logic such that the die life is prolonged and waste of material is
As shown in Fig. 1, an optical scanning inspection system 1, comprising
optical scanner 3 and light detector 5, is used to inspect ceramic tape 7 fed from
web feed device 9. Defect data thus generated is used by die control logic 11 to
determine defect-free portions of the ceramic tape. The tape is continuously fed
into a pneumatically actuated blanking die arrangement 13. The die is selectively
activated by control logic 11 only when defect-free material is present under the
die. Defective material is fed through the die into a scrap cutter 15 where it is cut
and discarded. Blanks generated by the die are transferred from the die via
transporter 17 to tray arrangement 19 where they are stacked in individual trays.
The number of blanks per tray is under control of the machine operator.
The selective blanking of defect-free ceramic material is further conceptually
shown in Fig. 2. Die control logic (not shown) activates the die after a
predetermined length of defect-free material is available to remove blanks, as
shown by the rectangle adjacent the tape region labeled "scrap" in Fig. 2. Defect
regions on the sheet inhibit the die, and the material passed through th...