Method for winding a thread on a bobbin and electro-hydraulic tr

Winding – tensioning – or guiding – Coil holder or support – Spool or core

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242 181, 242 431, 242158F, B65H 5428, B65H 5432, B65H 5438

Patent

active

045441081

ABSTRACT:
A cylinder (3) has a piston rod (21) with a uniform diameter and is connected to a hydraulic tank (7) by way of a relay valve (4). A first end (27) of a piston rod (21) is directly coupled to a traverse rod (28) carrying a thread guide (29). A second end (31) of piston rod (21) is coupled to an iron core (32) of an inductive position sensor (5), which generates a signal (y) for the actual position of piston rod (21). A shaft (35) for a wound twist-yarn bobbin (37) is equipped with a tachometer generator (38), which generates a signal (v) proportional to the number of revolutions. Output signals (y,v) of position sensor (5) and tachometer generator (38) are applied to an electronic control device (6) which, in accordance with these signals (y,v) and other, digital, adjustable stroke parameters, supplies an analog control signal (s) to relay valve (4). Consequently, all winding functions can be achieved by means of a simple, position-adjusted linear drive and electrical preselection, such as winding angle, edge displacement, stroke shortening and disturbed patterning.

REFERENCES:
patent: 3130930 (1964-04-01), Miller
patent: 3286941 (1966-11-01), Schippers et al.
patent: 3367588 (1968-02-01), Wolf
patent: 3375650 (1968-04-01), Sagehomme
patent: 3397529 (1968-08-01), Wolf
patent: 3406919 (1968-10-01), Turk et al.
patent: 3422614 (1969-01-01), Durler et al.
patent: 3445073 (1969-05-01), Schippers et al.
patent: 3445999 (1969-05-01), De Ruig
patent: 3793821 (1974-02-01), Schafer
patent: 4049211 (1977-09-01), Spescha

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