GB1155874A - Improvements relating to Tension Control In Material Unwinding Apparatus - Google Patents

Improvements relating to Tension Control In Material Unwinding Apparatus

Info

Publication number
GB1155874A
GB1155874A GB43530/66A GB4353066A GB1155874A GB 1155874 A GB1155874 A GB 1155874A GB 43530/66 A GB43530/66 A GB 43530/66A GB 4353066 A GB4353066 A GB 4353066A GB 1155874 A GB1155874 A GB 1155874A
Authority
GB
United Kingdom
Prior art keywords
reel
tachometer
coil
web
voltage
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
GB43530/66A
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
Schweizerische Aluminium AG
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
Priority claimed from CH1344765A external-priority patent/CH440899A/en
Application filed by Alusuisse Holdings AG, Schweizerische Aluminium AG filed Critical Alusuisse Holdings AG
Publication of GB1155874A publication Critical patent/GB1155874A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B21C47/003—Regulation of tension or speed; Braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/063—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/02—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package
    • B65H59/04—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating delivery of material from supply package by devices acting on package or support

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Abstract

1,155,874. Feeding webs. SWISS ALUMINIUM Ltd. 29 Sept., 1966 [29 Sept., 1965; 1 Oct., 1965], No. 43530/66. Heading B8K. [Also in Division F2] To maintain the tension constant in a web being fed by rollers 1 from a supply reel 2, the shaft of the reel is coupled to an induction or eddy current brake 3 the pole wheel of which is driven by a motor 5 at a constant speed in a reverse direction to the movement of the brake armature and reel shaft during unwinding, and the current in the coil 4 of the brake is controlled so that the braking effect is adjusted in such manner that the web tension remains substantially constant. The coil 4 is connected via an amplifier 6 to a potentiometer 9 which controls the voltage applied to the coil. Connected to the potentiometer are resistances 10, 11 in series with a tachometer 12 and a D.C. voltage source 13. The tachometer 12 is coupled to the feed rollers 1 and generates a voltage dependent on the speed of the rollers 1. With the reel 2 and rollers 1 stationary, and the motor 5 driving the pole wheel, the potentiometer 9 is adjusted so that the web is under the required tension. When the rollers 1 are started up, the tachometer 12 generates a voltage which causes variation of the current in the coil 4 so that the web tension remains constant as the web speed increases up to its normal value. During subsequent normal running, the voltage generated by the tachometer 12 remains constant. To effect the required adjustment of the coil current as the reel diameter decreases and its shaft speed increases during unwinding, the shaft of the reel 2 is coupled to a tachometer 19 generating a voltage corresponding to the shaft speed. The tachometer 19 is connected to resistances 17, 18 connected to the resistances 10, 11 in such manner that the differential voltage across the two pairs of resistances is applied to the potentiometer 9 to effect the required variation of the coil current. Series-connected mechanically-coupled potentiometers 7, 8 are also in the circuit between the potentiometer 9 and the amplifier 6. The potentiometers 7, 8 are connected, during acceleration or deceleration of the web, by switches 14, 15 respectively to a source of potential so that the coil current is varied to compensate for the acceleration and deceleration forces at the reel shaft. The switches 14, 15 are controlled by acceleration or deceleraton sensitive devices. In a simplified construction, the tachometer 19 and resistances 17, 18 are omitted so that the current in the coil 4 remains constant once the web has reached normal speed. In this arrangement the hyperbolic speed-torque characteristic of the brake causes an approximate adjustment of the brake torque as the reel decreases in diameter, to maintain the web tension substantially constant.
GB43530/66A 1965-09-29 1966-09-29 Improvements relating to Tension Control In Material Unwinding Apparatus Expired GB1155874A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1344765A CH440899A (en) 1965-09-29 1965-09-29 Method and arrangement for keeping the tension of the wound material constant in an unwinding device
CH1361465A CH445245A (en) 1965-09-29 1965-10-01 Method for maintaining a constant tension of the wound material on an unwinding device and arrangement for carrying out the method

Publications (1)

Publication Number Publication Date
GB1155874A true GB1155874A (en) 1969-06-25

Family

ID=25712326

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43530/66A Expired GB1155874A (en) 1965-09-29 1966-09-29 Improvements relating to Tension Control In Material Unwinding Apparatus

Country Status (6)

Country Link
US (1) US3421710A (en)
BE (1) BE687579A (en)
CH (1) CH445245A (en)
FR (1) FR1500420A (en)
GB (1) GB1155874A (en)
NL (1) NL154886B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853282A (en) * 1972-12-06 1974-12-10 Beloit Corp Tensioning device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912145A (en) * 1974-03-04 1975-10-14 Butler Automatic Inc Web tension control system
US4693049A (en) * 1982-05-04 1987-09-15 International Packaging Machines, Inc. Stretch wrapping machine
US5709350A (en) * 1996-02-14 1998-01-20 Davis; Joseph Louis Device for transferring fishing line
WO2006039426A1 (en) * 2004-09-29 2006-04-13 Goss International Corporation Control method for a static belt reel tension paster
CN103287897B (en) * 2012-02-29 2018-11-02 晟通科技集团有限公司 A kind of coating machine opens the sensor inertial compensation method in winding system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB544925A (en) * 1940-10-29 1942-05-04 English Electric Co Ltd Improvements in driving means for reels on which material is coiled
US2469706A (en) * 1944-05-04 1949-05-10 Martin P Winther Electronic tension control apparatus
US2917252A (en) * 1958-04-25 1959-12-15 Eastman Kodak Co Tension control apparatus
US3049313A (en) * 1959-07-27 1962-08-14 Black Clawson Co Web tension control system
US3257086A (en) * 1963-08-02 1966-06-21 John W Drenning Tension equalizing control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853282A (en) * 1972-12-06 1974-12-10 Beloit Corp Tensioning device

Also Published As

Publication number Publication date
NL6613740A (en) 1967-03-30
FR1500420A (en) 1967-11-03
NL154886B (en) 1977-10-17
CH445245A (en) 1967-10-15
BE687579A (en) 1967-03-01
US3421710A (en) 1969-01-14

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