(57) The workpiece feeding means comprises a conventional hammer-and-anvil arrangement
driven at a speed under operator control (T) and with variable feed length for "normal",
"snipping" and "pleating" operations. For each workpiece shape a set of settings of
these three feed lengths (SS1, SS2 and SS3) is stored in computer memory under an
identification (SS4) by which such set can subsequently be accessed. The set may also
include other style-sensitive settings, e.g. rate of adhesive flow (SS9), delay in
supplying adhesive (SS5), "density" of snipping (SS6), for subsequent recall with
the feed length settings. Provision is also made for certain operator-sensitive settings,
e.g. maximum feed speed for the particular operator (SS7) as a proportion of the overall
maximum for the machine; this enables the operator control (T) to be fully used over
its whole range and thus to maintain the sensitivity of control it provides regardless
of the maximum speed set. Provision is also made for certain adhesive-sensitive settings,
e.g. creaser foot temperature (SS8). The operator- and adhesive-sensitive settings
do not form part of the set of settings for a particular workpiece.
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