US3626737A - Bridles - Google Patents

Bridles Download PDF

Info

Publication number
US3626737A
US3626737A US872214A US3626737DA US3626737A US 3626737 A US3626737 A US 3626737A US 872214 A US872214 A US 872214A US 3626737D A US3626737D A US 3626737DA US 3626737 A US3626737 A US 3626737A
Authority
US
United States
Prior art keywords
rolls
differential
case
roll
strip
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 - Lifetime
Application number
US872214A
Other languages
English (en)
Inventor
Paul A Defontenay
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.)
WEAN IND Inc
Original Assignee
WEAN IND Inc
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 WEAN IND Inc filed Critical WEAN IND Inc
Application granted granted Critical
Publication of US3626737A publication Critical patent/US3626737A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP.OF OH
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). RECORDED ON REEL 4792 Assignors: WEAN UNITED INC./NOW WEAN INCORPORATED PA CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/05—Stretching combined with rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F9/00—Straining wire
    • B21F9/007—Straining wire to induce a plastic deformation of the wire

Definitions

  • the invention concerns a device which places tension on a metal strip by pulling the latter by means of pulling rolls of a pulling bridle through drag rolls of a drag bridle, each of the pulling and drag rolls being coupled to a following roll by means of a differential, and all rolls being driven by a common motor.
  • My invention provides a tension unit which avoids slippage and which can be used with any strip material of any gauge, with simultaneous control of the torque at each roll of the bridles.
  • the series of rolls 1, 2, 3 and 4 constitutes what may be termed a drag bridle, while the series of rolls 5, 6, 7 and 8 constitutes the pulling bridle, to create a tension on the portion of the strip S therebetween. Between the two bridles, a pair of rolls is illustrated, and
  • these rolls may illustrate a leveler P, or the rolls of any ice other suitable apparatus, such as a coating machine, controlled impression apparatus, or the like.
  • the number of rolls in the drag and pulling bridles may be varied and their diameters need not necessarily be equal.
  • a metal strip S for example, is pulled at a velocity V under a tension t by the roll 1.
  • the strip may be supplied in any suitable manner, such as from an uncoiler reel (not shown).
  • the strip leaves the roll 1 after a predetermined number of degrees of wrap therearound and then reaches the roll 2, and in the same way successively passes through all of the rolls up to the last one from whence it is accumulated by any suitable device (not shown).
  • each pair of adjoining rolls in the groups of rolls 1 through 4 and 5 through '8 is mechanically linked together by a differential 9.
  • Each differential comprises a case 10 which turns free on its shaft 11 and has satellite sprockets 12 and 13 linked together on a shaft which is supported by the respective case 10 for free rotation with respect thereto.
  • the satellite gears 12 and 13 respectively mesh with planetary gears 14 and 15, the gear 14 being fixed to the shaft 11 while the gear 15 is coaxial with but rotatable relative to the shaft 11.
  • Roll 1 is linked by a positive transmission, such as a chain 1a or the like, to the planetary gear 15 of roll 2.
  • Each pair of two dilferentials 9 receives its movement from, another differential 16, driven in turn by a motor 17 through a transmission 18, such as a chain or belt, and a shaft 19.
  • a differential 20 is mounted on shaft 19, the case of this differential being connected by bevel gearing 20a to a speed variator 21.
  • the speed variator 21 is driven from the shaft 19 by bevel gearing 21a, a servo-motor 22 providing for control of the speed variator.
  • Two similar differentials 23 and 24 are disposed in axial alignment with the shaft 19, each having a case which, under certain conditions, may be stopped or free to turn, a brake 25 and a stop 26 providing for control of the respective case.
  • the motor 17 and transmission 18 may be of the type to drive the shaft 19 at only one speed, or at several constant speeds, or at infinitely variable speeds, and suitable standard controls (not shown) may be used to effect such speed control.
  • the tension in the strip has thus been increased from the value t to the value T, by limitation of slippage conditioned by the value of the coetficient of friction f on one hand and the value of the angle of wrap a on the other hand, a being equal to 1ra/ with a the angle of wrap in degrees, and e equal to 2.71828 (the base of natural logarithms).
  • a principal object of my invention is to eliminate or at least effectively reduce the slippage between the strip and rolls, and to enable the apparatus to be satisfactory for operation on strips of various metalurgical properties and various thicknesses, and this is effected by driving each pair of rolls of each series of two groups by the differentials herein disclosed.
  • each differential 9 will transmit to each of the pair of rolls through the satellite and planetary gears a rotation such as roll 1, for example, may absorb the strip S to a velocity V under a tension 2, and roll 2, in this example, will receive the strip S under a tension T with a velocity V1 which is slightly higher than V due to elongation of the strip.
  • the reason of the creation of these two different velocities V and V1 as a function of strip elongation, and thus tension, is derived from the kinematic of the differential itself in which two turning elements, the planetary gears, may under external circumstances, modify in consequence to the velocity which is given to them by a third turning element, namely, the case.
  • the system of active and reactive forces is in equilibrium when passing through a close loop, such as the rolls 1 and 2.
  • the shaft 19 creates on the axially aligned shaft 27 a rotation having a value depending both from the rotation of shaft 19 and the rotation of the case of the differential 20. If it is assumed that this case does not turn, the rotative relationship between the shafts 19 and 27 is defined by the internal gearing of the differential 20. However, if the case should turn, the rotative relationship between the two shafts 19 and 27 will in fact also be dependant on this rotation of the case.
  • a further principal object of my invention is permanent control of the torques on the rolls and this is provided by the use in the main drive of the two differentials 23 and 24, the cases of each of which may be immobilized under certain conditions.
  • the case of each of the differentials 23 and 24 is linked to a brake 25 turning free on the respective shafts 19 and 27, and the brakes are prevented from turning by means of a stop 26 which has adjustable action.
  • the braking action of the differential cases 23, 24 prevents the entire system from freewheeling, so that torque may be transmitted by shafts 28 and 29.
  • the stop 26 is a conventional load measuring sys tem to read the torque being transmitted by the shaft. This same stop is so arranged as to release or slip if torque ratings of the system are exceeded and may also be released by the operator when threading strip through the apparatus, or for other reasons.
  • a bridle for metal strip comprising two rolls each having a driving shaft, the strip being adapted to be wrapped around a portion of the periphery of one roll and then around a portion of the periphery of the other roll, a differential coupling said rolls, comprising a case revolvable about the shaft of one of said rolls and drivingly connected to the shaft of the other roll through planetary gearing within said case, and a motor for rotating said differential case.
  • a second differential is interposed in the line of drive between said motor and said first differential case, said second differential comprising a rotatable case, and planetary gearing within the same, and a speed variator acting on the case of said second differential for varying the drive.
  • a bridle apparatus comprising two rolls forming a drag bridle and two rolls forming a pulling bridle for pulling metal strip through said drag bridle, incoming strip being adapted to be wrapped around a portion of the periphery of one roll of said drag bridle and then around a portion of the periphery of the other roll of said drag bridle, and thereafter passing to and wrapped around a portion of the periphery of one roll of said pulling bridle and then around a portion of the periphery of the other roll of said pulling bridle, a first differential, including a rotatable case and planetary gearing in said case, for coupling the rolls of said drag bridle, and a second differential, including a rotatable case and planetary gearing in said case, for coupling the rolls of said pulling bridle, and a common motor for driving the rolls of said drag and pulling bridles through their respective differentials.
  • Bridle apparatus for metal strip comprising four successively adjoining rolls with their rotational axes in parallel relation, the metal strip being adapted to be wrapped successively around portions of said rolls, a first differential, including a rotatable case and planetary gearing in said case, effecting driving relation between a first pair of adjoining rolls, and a second differential, including a rotatable case and planetary gearing in said case, effecting driving relation between the second pair of adjoining rolls, and a third third differential, including a rotatable case and planetary gearing in said case, effecting driving relation between said first and second differentials, and a motor References Cited for driving said third differential.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
US872214A 1968-12-27 1969-10-29 Bridles Expired - Lifetime US3626737A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR181159 1968-12-27

Publications (1)

Publication Number Publication Date
US3626737A true US3626737A (en) 1971-12-14

Family

ID=8659248

Family Applications (1)

Application Number Title Priority Date Filing Date
US872214A Expired - Lifetime US3626737A (en) 1968-12-27 1969-10-29 Bridles

Country Status (6)

Country Link
US (1) US3626737A (me)
BE (1) BE740939A (me)
DE (1) DE1958623C3 (me)
ES (1) ES373679A1 (me)
FR (1) FR1599475A (me)
NL (1) NL6917273A (me)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777533A (en) * 1971-10-21 1973-12-11 Ungerer Irma Apparatus for straightening metal by stretching
US3783667A (en) * 1971-04-14 1974-01-08 Ungerer Irma Apparatus for straightening metal by stretching
US3796080A (en) * 1971-05-13 1974-03-12 Ungerer Irma Combined stretch-type straightening apparatus for metal strips
US3798951A (en) * 1972-10-03 1974-03-26 Herr Voss Corp Torque distribution system
US3862559A (en) * 1972-02-14 1975-01-28 Continental Gummi Werke Ag Method and device for making conveyor belts
US3867826A (en) * 1972-07-21 1975-02-25 Bwg Bergwerk Walzwerk Stretcher for continuously moving strip
US4819470A (en) * 1985-04-20 1989-04-11 Bwg Bergwerk-Und Walzwerk-Maschinenbau Gmbh Method for continuously straightening thin metal strips
US4819507A (en) * 1987-01-14 1989-04-11 Societe Redex Device for simultaneously driving the screws of two parallel screw-and-nut systems
CN104988445A (zh) * 2015-07-31 2015-10-21 宝钛集团有限公司 板式换热器用钛带成品拉矫方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE791015A (fr) * 1972-07-21 1973-03-01 Bwg Bergwerk Walzwerk Dispositif de tension pour bandes a circulation continue
BE793477A (fr) * 1972-11-28 1973-04-16 Bwg Dispositif de tension pour bandes a circulation
EP0142577A1 (en) * 1983-11-22 1985-05-29 Nippon Steel Corporation Roller leveler driving apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783667A (en) * 1971-04-14 1974-01-08 Ungerer Irma Apparatus for straightening metal by stretching
US3796080A (en) * 1971-05-13 1974-03-12 Ungerer Irma Combined stretch-type straightening apparatus for metal strips
US3777533A (en) * 1971-10-21 1973-12-11 Ungerer Irma Apparatus for straightening metal by stretching
US3862559A (en) * 1972-02-14 1975-01-28 Continental Gummi Werke Ag Method and device for making conveyor belts
US3867826A (en) * 1972-07-21 1975-02-25 Bwg Bergwerk Walzwerk Stretcher for continuously moving strip
US3798951A (en) * 1972-10-03 1974-03-26 Herr Voss Corp Torque distribution system
US4819470A (en) * 1985-04-20 1989-04-11 Bwg Bergwerk-Und Walzwerk-Maschinenbau Gmbh Method for continuously straightening thin metal strips
US4819507A (en) * 1987-01-14 1989-04-11 Societe Redex Device for simultaneously driving the screws of two parallel screw-and-nut systems
CN104988445A (zh) * 2015-07-31 2015-10-21 宝钛集团有限公司 板式换热器用钛带成品拉矫方法
CN104988445B (zh) * 2015-07-31 2017-04-19 宝钛集团有限公司 板式换热器用钛带成品拉矫方法

Also Published As

Publication number Publication date
FR1599475A (me) 1970-07-15
ES373679A1 (es) 1972-03-16
DE1958623C3 (de) 1978-03-16
NL6917273A (me) 1970-06-30
DE1958623A1 (de) 1971-02-04
DE1958623B2 (de) 1977-05-12
BE740939A (me) 1970-04-01

Similar Documents

Publication Publication Date Title
US3626737A (en) Bridles
US4365496A (en) Rolling process
US3867826A (en) Stretcher for continuously moving strip
US3427848A (en) Devices for cold-rolling and planishing metal sheet
US2916227A (en) Constant tension unwinding control
US3000584A (en) Windup roll drive
US4218969A (en) Band feeding and tightening apparatus for strapping machine
US3764050A (en) Differential drive for tension rollers
US3362202A (en) Strip tensioning apparatus
US3646798A (en) Wire drawing apparatus and method
US3580033A (en) Rolling mill for producing thin strip stock
US3796080A (en) Combined stretch-type straightening apparatus for metal strips
US3641797A (en) Stretcher leveling system
US1881056A (en) Tension device
US3766767A (en) Multiple roll bridle system
US3783667A (en) Apparatus for straightening metal by stretching
US1266942A (en) Winding mechanism.
US2126470A (en) Tensioned power drive
US3595495A (en) Eddy current clutch actuated rewinder
GB2041869A (en) Band Feeding and Tightening Method and Device for Strapping Machine
EP0646425B1 (en) Multistage wiredrawing machine provided with pull adjustment
US4079615A (en) Tensioning apparatus for continuous strip, especially metal strip and bands
US3389591A (en) Bridle
USRE28602E (en) Differential drive for tension rollers
US2883122A (en) Constant tension unwinding control

Legal Events

Date Code Title Description
AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:WEAN UNITED INC./NOW WEAN INCORPORATED PA CORP.;REEL/FRAME:005004/0152

Effective date: 19881013