Abstract
The porduction of pattern card for a jacquard loom depends upon the skill of craftmen which requires many labors and hours. In order to modernize such pattern card production process, a prototype of an automatic pattern card punching system has been designed using a mini computer. This system is based on three units whose main functions are as follows :
(1) Pattern Analyser
This is a device which detects the colour of a multi-colour sketch design by linewise scanning and punches out the Colour into the paper tape as a pattern signal.
(2) Signal Processing Unit (Mini Computer)
This is a unit which memorizes the colour pattern signals, and converts them into pattern weaving signals, through a stored program. And this unit controls centrally all the processing operation.
(3) Automatic Pattern Card Punching Machi
This is a machine to punch out pattern card in accordance with the pattern weaving signals delivered from the signal processing unit.
We stored the highly skillful expert craftmen's work into the signal processing unit as a program and could develop an automatic pattern card making method whose input and output are a multi-colour sketch design and pattern cards respectively. This prototype of an automatic pattern card punching system is proved to be fully practical.
