Roving machine

Details Roving machine Roving machine

1993-05-05

1995-10-31

Envall, Jr., Roy N.

Boots, shoes, and leggings

57 96, 57264, D01H 126

Patent

active

054635578

ABSTRACT:
A data base used for determining the amount of decrease in the bobbin rotational speed that corresponds to an increase in the number of roving layers, along with silver weight, fiber kind, the number of revolutions of a flyer and the number of laps over presser, etc. as variables, is stored in a program memory. Based on roving conditions entered through an input unit and the data base stored in the program memory, a CPU calculates the amount of decrease of the bobbin rotational speed that corresponds to the increase in the number of sliver layers. With a control signal output from the CPU in response to the increase in the number of sliver layers, a wind-up motor is controlled to slow down so that the bobbin rotational speed is gradually reduced by a predetermined amount. The bobbin rotational speed is also controlled depending on the sliver position between a front roller and a flyer top.

REFERENCES:
patent: 4134253 (1979-01-01), Handa et al.
patent: 4375744 (1983-03-01), Briner et al.
patent: 4551969 (1985-11-01), Kogiso et al.
patent: 4569192 (1986-02-01), Yamada et al.
patent: 4698957 (1987-10-01), Satzger et al.
patent: 4890452 (1990-01-01), Nishikawa et al.
patent: 5038438 (1991-08-01), Gunter
English language Abstract of Japanese Unexamined Patent Publication No. 63-264,923. Nov. 1, 1988.

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