GB1370199A - Control system for a textile machine - Google Patents

Abstract

1370199 Control BARMAG BARMER MASCHINENFABRIK AG 3 March 1972 [4 March 1971 (2)] 10082/72 Heading DID [Also in Divisions F2 and G3] A portable control unit for simultaneously or successively controlling speed-ratio selecting clutches K1..K8 in multi-stage gear trains of each of a number of textile machines comprises means 14 for setting values of rotational speeds or of a corresponding textile property, such as speed twist or stretch, a converter 16" converting these values to ratio shift commands and means such as plug-in cable connections for temporarily connecting the unit to the respective machines. The setting means may be a keyboard 14, Fig. 1, a punched or magnetic tape or perforated rotating disc or cylinder supplying decimal binary coded signals. In Fig. 1 the keyboard 14 feeds values to a store 16 comprising relays or transistor flipflops. A component 16' stores the values, and the converter component 16" converts these into ratio-shift commands stored in a store component 16"'. A store component 32 is provided on each individual machine controlled by the common control unit 2 through plugged leads 3, 3' &c. In Fig. 2, not shown, the commands are on an endless punched tape fed in detent-located steps corresponding to punched columns representing the coded speed ratios, through a reader 6, whilst in Fig. 3, not shown, the control data are on arotating disc, in which speed ratios are represented by perforated radial columns, there being a separate input from a decimal keyboard (14) controlling textile properties (twist and stretch), and followed by a coding circuit and store (15), which, together with a reading unit (6) of the rotating disc, supply a digital comparator (17). Separate timing marks (13.1), at the end of each column on the rotating disc, also supply timing pulses to a bi-stable flip-flop (24), which activates the comparator (17) to produce an output signal when the keyboard signal exceeds the reader signal, the output feeding through an AND circuit (25), having as its other input the output of the flip-flop (24), the negative signal of which serves to release the ratio-shift commands from the store 15. The positive output signal of the flip-flop (24), and hence of the comparator (17), is only present when the reader (6) reads a column in which other than starting zeros are formed.