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Outline of Mechanism Pattern generator
Pattern generator
Conventionally, a cam that has the mechanical data cut into it has been used to move the adjuster and needle bar and
generate the pattern. In contrast, this sewing machine operates an F pulse motor and Z pulse motor, moves the feed
adjuster and needle bar and generates the pattern using data (S2:50types, S3:119types) stored in internal CPU memory.
Pattern generator control block diagram
CPU
Z drive circuit
Needle bar mechanism
F drive circuit
Feed adjustment mechanism
S2: Seven segment LED
S3: LCD
Select the pattern using
the pattern selection key.
Pattern
data
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