GB966018A - Improvements in and relating to electric control systems - Google Patents

Improvements in and relating to electric control systems

Info

Publication number
GB966018A
GB966018A GB26260A GB26260A GB966018A GB 966018 A GB966018 A GB 966018A GB 26260 A GB26260 A GB 26260A GB 26260 A GB26260 A GB 26260A GB 966018 A GB966018 A GB 966018A
Authority
GB
United Kingdom
Prior art keywords
counter
voltage
mandrel
signal
potentiometer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB26260A
Inventor
Ronald Quinnen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB26260A priority Critical patent/GB966018A/en
Publication of GB966018A publication Critical patent/GB966018A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to predetermined lengths of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/006—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only winding-up or winding-off several parallel metal bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/34—Feeding or guiding devices not specially adapted to a particular type of apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

966,018. Feeding webs. ENGLISH ELECTRIC CO. Ltd. April 4, 1960 [Jan. 4, 1960], No. 262/60. Heading B6B. An electric control system for controlling a material treating machine and an associated uncoiling machine includes means for decelerating the treating machine in a predetermined manner when initiated by a decelerating initiating signal. As shown, metal strip 11 is uncoiled from an expansible mandrel 12 by pinch rollers 14 for supplying a slitting machine 13. The mandrel 12 is braked by an electrical generator 15. In operation, the leading end of a new strip coil is joined by welding to the trailing end of an expiring strip coil. As the end of the new coil is approached, deceleration of the slitting machine motor, not shown, by a control circuit, not shown, is initiated by the control system. The rolls 14 drive an electric digital counter 16 and a tacho-generator 17 while the mandrel 12 drives a second electric digital counter 18. The counter 16 applies a signal to the counter 18 on attaining a predetermined number Z, while counter 18 starts with an initial count of the predetermined number and counts down as the mandrel 12 rotates. The counter 18 feeds a signal to a digital-to-analogue converter 19 which applies an output voltage to a comparison device 20 also fed with a voltage from a tachometer generator 17 through a voltage squaring device 22 and potentiometer 21. When the voltage from the converter 19 falls below the voltage from the potentiometer 21, a relay 23 initiates the deceleration of the slitting machine motor, not shown. The potentiometer 21 is adjusted according to the thickness of the strip 11. In a modification (Fig. 1, Complete Specification, not shown) the counter 18 starts from zero and counts to the number Z to produce a signal causing the counter 16 to cease counting. The counter 16 then produces a signal applied to the converter 19 which is compared with a signal dependent on the square of the speed of material as described in the previous embodiment. Alternatively, the mandrel 12 and rolls 14 may drive tachometer generators to produce voltage signals or in the case of A.C. type generators the frequencies of the A.C. voltage may be compared.
GB26260A 1960-01-04 1960-01-04 Improvements in and relating to electric control systems Expired GB966018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26260A GB966018A (en) 1960-01-04 1960-01-04 Improvements in and relating to electric control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26260A GB966018A (en) 1960-01-04 1960-01-04 Improvements in and relating to electric control systems

Publications (1)

Publication Number Publication Date
GB966018A true GB966018A (en) 1964-08-06

Family

ID=9701265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26260A Expired GB966018A (en) 1960-01-04 1960-01-04 Improvements in and relating to electric control systems

Country Status (1)

Country Link
GB (1) GB966018A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299755B (en) * 1965-12-28 1969-07-24 Elektroprojekt Berlin Veb Circuit arrangement for the automatic shutdown of rolling mill stands
WO2008096034A1 (en) 2007-02-05 2008-08-14 Abb Oy Method for controlling an electric drive

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1299755B (en) * 1965-12-28 1969-07-24 Elektroprojekt Berlin Veb Circuit arrangement for the automatic shutdown of rolling mill stands
WO2008096034A1 (en) 2007-02-05 2008-08-14 Abb Oy Method for controlling an electric drive
EP2115867A1 (en) * 2007-02-05 2009-11-11 ABB Oy Method for controlling an electric drive
EP2115867A4 (en) * 2007-02-05 2017-04-05 ABB Oy Method for controlling an electric drive

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