US3527425A - Retractable tension reel - Google Patents

Retractable tension reel Download PDF

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Publication number
US3527425A
US3527425A US760898A US3527425DA US3527425A US 3527425 A US3527425 A US 3527425A US 760898 A US760898 A US 760898A US 3527425D A US3527425D A US 3527425DA US 3527425 A US3527425 A US 3527425A
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Prior art keywords
mandrel
coil
bearing
tension reel
strip
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Expired - Lifetime
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US760898A
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Charles Storer Shumaker
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United Engineering and Foundry Co
United Engineering Inc
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United Engineering and Foundry Co
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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.
Anticipated expiration legal-status Critical
Assigned to UNITED ENGINEERING ROLLING MILLS, INC. reassignment UNITED ENGINEERING ROLLING MILLS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WEAN INCORPORATED
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    • 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
    • B21C47/28—Drums or other coil-holders
    • B21C47/30—Drums or other coil-holders expansible or contractible

Definitions

  • the mandrel rotatably supported by bearing block assemblies located at the outboard and inboard ends of the mandrel. ⁇ These bearing block assemblies are rigidly held to foundation mounted structures by wedges which, when released by piston cylinder assemblies, allow the mandrel, including its expanding mechanism, to be completely retracted on a sled from a newly formed coil to one side thereof. During this time the coil is supported by a coil transfer car.
  • the mandrel is connected to a gear drive by an elongated splined shaft that telescopes into the drive when the mandrel is retracted from the coil.
  • Tension reels as they are known in the art, ⁇ are employed to coil metallic strip delivered from a rolling mill, as well as strip processing lines. During the formation of a coil, the oncoming strip is placed under tension generated by the reel for the principalrpurpose of insuring that the coil is formed of aligned, tightly-wound,
  • Known tension reels generally take the form of driven expandable mandrels rotatably supported at one end in a cantilever manner.
  • Such a mandrel is subject to large bending forces causing it to deflect under the weight of coiled strip, which in present-day practice may exceed 70,000 pounds, and the strip tension generated by the reel. It is pointed out here that such dellection of the mandrel is not only detrimental to parts of the mandrel but also results in the formation of a coil having nonuniform or non-straight sides, as previously mentioned.
  • lIt is a further object of the present invention to provide a tension reel having an expandable mandrel assembly supported at both ends by a foundation-mounted structure, which mandrel is retractable from a newly formed coil of strip for removal thereof from the mandrel.
  • a tension reel according to the present invention further includes:
  • Mandrel expansion means carried by said housing
  • Coil stripping means carried by the stationary base for restraining movement of the coiled strip during removal of the mandrel therefrom;
  • First wedge means carried by the stationary base for rigidly holding the housing during coiling of the strip on the mandrel;
  • Second wedge means carried by the rigid frame for rigidly holding the outboard bearing assembly during coiling of the strip and the mandrel;
  • a piston cylinder assembly connected to each of the wedge means for releasing the wedge means from the housing and the outboard bearing assembly.
  • FIG. 1 is an elevational view, partly in section, of a tension reel incorporating the features of the present invention
  • FIG. 2 is an enlarged sectional View taken along lines II-II of FIG. 1;
  • FIG. 3 is an enlarged sectional view taken along lines III-III of FIG. 1.
  • the tension reel includes an expandable mandrel 11 constructed in a manner, per se, well known in the art.
  • a bearing assembly 12 which essentially includes an antifriction bearing 13 received within a tubular bearing block 14.
  • the outboard bearing assembly 12 is supported by a foundation mounted and robustly constructed support 15, which includes a support housing 16 formed with an inside diameter slightly larger than the outside diameter of the bearing block 114.
  • the support housing 16, as best shown in FIGS. l and 3, is included as an integral part of a robustly constructed weldment 17 that is secured to the foundation by bolts 17a.
  • a piston cylinder assembly 18 connected ⁇ at its rod end to a wedge 19.
  • This wedge is constructed and arranged to be slidably received in a tapered slot 16a formed in the housing 16.
  • the piston cylinder assembly actuated wedge is employed to releasably secure the outboard bearing assembly 12 to the support 15 during coiling of strip on the mandrel.
  • the inboard end of the mandrel is constructed with an extended shaft 11a on which are mounted spaced-apart bearing block assemblies 21 and 22.
  • These bearing assemblies form part of a sled 23 which is constructed with horizontal projections 24 that are slidably supported in longitudinally arranged guideways 25 formed in a foundation mounted base 26.
  • the sled is provided with a downwardly extending projection to which is secured the rod end of a piston cylinder assembly 27 employed to traverse the sled, hence, also the mandrel supported by the bearing block assemblies 21 and 22 relative to the coil C.
  • the bearing assembly 21 is constructed as an extension of the sled whereby the rectangularly shaped bearing block 28 is supported by block 28 is releasably secured to the bearing lined surfaces by a wedge 30 connected to the rod end of a piston cylinder assembly 31.
  • An arm 32 projects upwardly from the ybase for mounting the piston cylinder assembly 31, as well as providing support surfaces for the wedge 30.
  • FIG. 1 An expanding mechanism is provided for the mandrel 11 which, while it may be in the form of a number of well-known constructions, the one illustrated in FIG. 1 consists of a piston cylinder assembly 33 supported by arms 34 extending from the bearing block 28.
  • a crosshead 35 interconnects the rod end of the piston cylinder assembly with one of the ends of spaced parallel arms 36. These arms are pivotallysecured at their opposite ends by links 37 to the extensions of the bearing block 28.
  • Trunnions, not shown, are used to connect the midpoints of the arms 36 to the bearing block assembly 38 lby which it is slidably displaced along an extending portion 11a of the mandrel by the piston cylinder assembly 33.
  • the sliding movement of the bearing 'block 38 is transmitted to the actuating rod 39 of the mandrel
  • a drive 42 interconnects a motor, not shown, with the mandrel through a spindle 43.
  • the spindle has a splined end 44 that telescopes into and out of the drive when the mandrel is retracted from a coil along the base 26.
  • a coil stripper plate 45 secured to the base 26.
  • the plate 45 is constructed with a, concaved upper surface to conform generally to the circular shape and size of the mandrel.
  • a tensionreel comprising:
  • V With particular: referenceVv toVV E1G-. :2pc-the.l .bearing-vv drive means connected to said mandrel for generating eee-tension on-strip during coiling;mln Af vf rst bearing means mounted on the outboard end of said mandrel; l' a frame rigidly mounted on a foundation for supporting said first bearing means; isecond bearing means mounted on the inboard end ⁇ of said mandrel andincluding sled means mountlng said second bearing means; v a base rigidly mounted on a foundation and including elongatedsurfaces ⁇ for slidably supporting said sled means;
  • 2LA tensionvreel according to claim 1 further comprising: I Y' mandrel expansion means carried by said secondfbearing means; and
  • coil stripping means carried by said base adjacent Said mandrel for restraining against movement a coil during removal of said mandrel therefrom.
  • a tension 'reel according to claim 1 further comprising separate and independent locking means for securing said rst bearing means to said frame and said second bearing means to said lbase.
  • each of said locking means includes a wedge connected to a piston cylinder assembly.
  • a tension reel comprising:

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

Description

Sept. 8, 1970 c. s. sHuMAKER RETRACTABLE TENSION REEL Filed Sept. 19, 1968 n H ,rf//J /f//f/H//4//f////W M M -11! m.. M J El .j E 1 f w c w w w .Il TC. s DN/W S. l v 0N L QN R Y Y f AB H QM C vn m. H L
@..Jmdf mW Lo. Il Z m\w of S.. 4 III r I I lll Il w- H N. E. l Nm3. .r @n .l Q O l 0 nm HIS TTORNEY United States Patent() 3,527,425 l RETRACTABLE TENSION REEL Charles Storer Shumaker, Glenshaw, Pa., assignor to United Engineering and Foundry Company, Pittsburgh, Pa., a corporation of Pennsylvania Filed Sept. 19, 1968, Ser. No. 760,898 Int. Cl. B21c 47/02 ABSTRACT or THE DISCLOSURE The tension reel disclosed is designed to minimize deilection of the expandable mandrel employed to impose tension on metallic strip being coiled. The mandrel rotatably supported by bearing block assemblies located at the outboard and inboard ends of the mandrel.` These bearing block assemblies are rigidly held to foundation mounted structures by wedges which, when released by piston cylinder assemblies, allow the mandrel, including its expanding mechanism, to be completely retracted on a sled from a newly formed coil to one side thereof. During this time the coil is supported by a coil transfer car. The mandrel is connected to a gear drive by an elongated splined shaft that telescopes into the drive when the mandrel is retracted from the coil.
BACKGROUND OF THE DISCLOSURE Tension reels, as they are known in the art,` are employed to coil metallic strip delivered from a rolling mill, as well as strip processing lines. During the formation of a coil, the oncoming strip is placed under tension generated by the reel for the principalrpurpose of insuring that the coil is formed of aligned, tightly-wound,
consecutive wraps of strip. lt is very desirable, if not even essential, that the completed coil should have straight sides which are free from both irregularly projecting wraps and a telescoping shape. In this respect, should the coil not have straight sides, the projecting portions of the strip are frequently damaged during subsequent handling of the coil, thus increasing the scrap losses of the coil.
Known tension reels generally take the form of driven expandable mandrels rotatably supported at one end in a cantilever manner. Such a mandrel is subject to large bending forces causing it to deflect under the weight of coiled strip, which in present-day practice may exceed 70,000 pounds, and the strip tension generated by the reel. It is pointed out here that such dellection of the mandrel is not only detrimental to parts of the mandrel but also results in the formation of a coil having nonuniform or non-straight sides, as previously mentioned.
To reduce deflection of such tension reel mandrels, it is known in the art to support its outboard end by a movable bearing support which must be retracted to some remote position to allow the newly formed coil to be removed by stripping it axially from the mandrel by a coil car or other means. While such outboard bearing supports have met with a certain degree of success, they have not been wholly acceptable since wear and distortion of their movable parts over a period of time, along with necessary operating clearances, allow the mandrel to deflect while the coil is being formed.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a more economical tension reel incorporating a minimum of movable parts to resist deliection of the coiling mandrel.
It is another object of the present invention to provide a tension reel having a robust foundation-mounted sup- 3,527,425 Patented Sept. 8, 1970 port for the outboard end of the expandable mandrel to effectively resist its deflection during coiling of strip material.
lIt is a further object of the present invention to provide a tension reel having an expandable mandrel assembly supported at both ends by a foundation-mounted structure, which mandrel is retractable from a newly formed coil of strip for removal thereof from the mandrel.
In addition to the foregoing, a tension reel according to the present invention further includes:
Mandrel expansion means carried by said housing;
Coil stripping means carried by the stationary base for restraining movement of the coiled strip during removal of the mandrel therefrom;
First wedge means carried by the stationary base for rigidly holding the housing during coiling of the strip on the mandrel;
Second wedge means carried by the rigid frame for rigidly holding the outboard bearing assembly during coiling of the strip and the mandrel; and
A piston cylinder assembly connected to each of the wedge means for releasing the wedge means from the housing and the outboard bearing assembly.
These features, as well as others, will be better understood when the following description is read in light of the accompanying drawings of which:
FIG. 1 is an elevational view, partly in section, of a tension reel incorporating the features of the present invention;
FIG. 2 is an enlarged sectional View taken along lines II-II of FIG. 1; and
FIG. 3 is an enlarged sectional view taken along lines III-III of FIG. 1.
With reference to FIG. 1, there is illustrated a tension reel for Iwinding strip into a coil C The tension reel includes an expandable mandrel 11 constructed in a manner, per se, well known in the art. Mounted on the outboard end of the mandrel is a bearing assembly 12 which essentially includes an antifriction bearing 13 received within a tubular bearing block 14. According to the vpresent invention, the outboard bearing assembly 12 is supported by a foundation mounted and robustly constructed support 15, which includes a support housing 16 formed with an inside diameter slightly larger than the outside diameter of the bearing block 114. The support housing 16, as best shown in FIGS. l and 3, is included as an integral part of a robustly constructed weldment 17 that is secured to the foundation by bolts 17a. Oiset from the top of the support 15, there is mounted a piston cylinder assembly 18 connected `at its rod end to a wedge 19. This wedge is constructed and arranged to be slidably received in a tapered slot 16a formed in the housing 16. The piston cylinder assembly actuated wedge is employed to releasably secure the outboard bearing assembly 12 to the support 15 during coiling of strip on the mandrel.
The inboard end of the mandrel is constructed with an extended shaft 11a on which are mounted spaced-apart bearing block assemblies 21 and 22. These bearing assemblies form part of a sled 23 which is constructed with horizontal projections 24 that are slidably supported in longitudinally arranged guideways 25 formed in a foundation mounted base 26. The sled is provided with a downwardly extending projection to which is secured the rod end of a piston cylinder assembly 27 employed to traverse the sled, hence, also the mandrel supported by the bearing block assemblies 21 and 22 relative to the coil C.
As best shown in FIGS. 1 and 2, the bearing assembly 21 is constructed as an extension of the sled whereby the rectangularly shaped bearing block 28 is supported by block 28 is releasably secured to the bearing lined surfaces by a wedge 30 connected to the rod end of a piston cylinder assembly 31. An arm 32 projects upwardly from the ybase for mounting the piston cylinder assembly 31, as well as providing support surfaces for the wedge 30.
An expanding mechanism is provided for the mandrel 11 which, while it may be in the form of a number of well-known constructions, the one illustrated in FIG. 1 consists of a piston cylinder assembly 33 supported by arms 34 extending from the bearing block 28. A crosshead 35 interconnects the rod end of the piston cylinder assembly with one of the ends of spaced parallel arms 36. These arms are pivotallysecured at their opposite ends by links 37 to the extensions of the bearing block 28. Trunnions, not shown, are used to connect the midpoints of the arms 36 to the bearing block assembly 38 lby which it is slidably displaced along an extending portion 11a of the mandrel by the piston cylinder assembly 33. The sliding movement of the bearing 'block 38 is transmitted to the actuating rod 39 of the mandrel |by a bar 40 which passes through an elongated slot formed in the mandrel.
A drive 42 interconnects a motor, not shown, with the mandrel through a spindle 43. The spindle has a splined end 44 that telescopes into and out of the drive when the mandrel is retracted from a coil along the base 26. To facilitate removal of the coil C from the mandrel, there is provided a coil stripper plate 45 secured to the base 26. The plate 45 is constructed with a, concaved upper surface to conform generally to the circular shape and size of the mandrel.
When it is desired to remove a newly formed coil from the mandrel, the wedge 19 is released by the piston cylinder assembly 18 and the wedge 30 is released by the piston cylinder assembly 31. After this occurs, a coil car 46, constructed in a manner well known in the art, is brought into a supporting relationship with the coil, after which the piston cylinder assembly 27 is actuated to retract the mandrel from the coil by traversing the sled 23 along the guideways formed in the base 26. It will be appreciated by those skilled in the art that a tension reel constructed in accordance with the present invention per mits the employment of small, less expensive bearings, particularly those incorporated in the bearing block assemblies 21 and 22. This is made possible because the weight of a coil during its formation and after completion is always sustained 'by the inboard and outboard bearings at the same time and not separately.
In accordance with the provisions of the patent statutes, I have explained the principle and operation of my invention and have illustrated and described what I consider to represent the best embodiment thereof.
I claim:
1. A tensionreel comprising:
an expandable mandrel for forming metallic strip into a coil;
base 26. VWith particular: referenceVv toVV E1G-. :2pc-the.l .bearing-vv drive means connected to said mandrel for generating eee-tension on-strip during coiling;mln Af vf rst bearing means mounted on the outboard end of said mandrel; l' a frame rigidly mounted on a foundation for supporting said first bearing means; isecond bearing means mounted on the inboard end `of said mandrel andincluding sled means mountlng said second bearing means; v a base rigidly mounted on a foundation and including elongatedsurfaces `for slidably supporting said sled means;
means operatively associated with said sled means for displacing said'sled along said support surfaces a distance "sucient to retract said mandrel from a coil; and
means ,for supportingthe coil during displacement of said mandrel Iby the said last-named means.
2LA tensionvreel according to claim 1 further comprising: I Y' mandrel expansion means carried by said secondfbearing means; and
coil stripping means carried by said base adjacent Said mandrel for restraining against movement a coil during removal of said mandrel therefrom.
3. A tension 'reel according to claim 1 further comprising separate and independent locking means for securing said rst bearing means to said frame and said second bearing means to said lbase.
4. A tension reel according to claim 3 wherein each of said locking means includes a wedge connected to a piston cylinder assembly.
5. A tension reel comprising:
an expandable mandrel for forming metallic strip into a coil;
-a sled'rotatably supporting one end of said mandrel;
a base `for slidably supporting said sled;
bearing means carried on the other end of said mandrel; Va foundation mounted frame for supporting said bear- 'g ing means;
'means connected to said sled means for slidably displacing said sled relative to said base a distance sulficient toretract saidV mandrel from a coil formed thereon; and v means for supporting the coil during removal of said mandrel from the coil by said last-named means.
References Cited UNITED STATES PATENTS .lNiATHANL MINTZ, Primary Examiner UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTICN Patent No 3 ,527 ,425 September 8 1970 Charles Storer Shumaker It is certified that error appears in the above identified patent and that said Letters Patent are hereby corrected as shown below:
line 3, after "mandrel" insert is Column 4,
Column l,
should read sufficient line l5, l1sucient" Signed and sealed this 6th day of April 1971.
(SEAL) Attest:
WILLIAM E. SCHUYLER, JR.
EDWARD M.FLETCHER,JR. Attesting Officer Commissioner of Patents
US760898A 1968-09-19 1968-09-19 Retractable tension reel Expired - Lifetime US3527425A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160531A (en) * 1977-10-25 1979-07-10 Brammall, Inc. Apparatus and methods for untelescoping and rewinding reels of sheet material such as steel
US4550881A (en) * 1983-11-28 1985-11-05 Deere & Company Scrap scroller for a shear discharge conveying system
US4850546A (en) * 1982-09-16 1989-07-25 Lauener Engineering Ag Appratus and method for reeling up strips
EP0857679A2 (en) 1997-02-06 1998-08-12 WindmÀ¶ller & Hölscher Device for winding a web of material
WO2003022477A1 (en) * 2001-08-24 2003-03-20 Sms Demag Aktiengesellschaft Device for winding/unwinding metal strips in particular for steel bands
US20160236251A1 (en) * 2014-05-26 2016-08-18 Sms Group Gmbh Device for winding a strip material into a coil
CN107520276A (en) * 2017-08-03 2017-12-29 江苏高和智能装备股份有限公司 A kind of line-spacing take-up mechanism such as identical tension
WO2019242920A1 (en) 2018-06-21 2019-12-26 Primetals Technologies Austria GmbH Coiling a metal strip, and coiling system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312416A (en) * 1964-03-10 1967-04-04 Kajiwara Toshiyuki Cold rolling apparatus
US3317158A (en) * 1964-08-11 1967-05-02 United Eng Foundry Co Outboard bearing for tension reels

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3312416A (en) * 1964-03-10 1967-04-04 Kajiwara Toshiyuki Cold rolling apparatus
US3317158A (en) * 1964-08-11 1967-05-02 United Eng Foundry Co Outboard bearing for tension reels

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160531A (en) * 1977-10-25 1979-07-10 Brammall, Inc. Apparatus and methods for untelescoping and rewinding reels of sheet material such as steel
US4850546A (en) * 1982-09-16 1989-07-25 Lauener Engineering Ag Appratus and method for reeling up strips
US4917320A (en) * 1982-09-16 1990-04-17 Lauener Engineering Ag Apparatus and method for reeling up strips
US4550881A (en) * 1983-11-28 1985-11-05 Deere & Company Scrap scroller for a shear discharge conveying system
EP0857679A2 (en) 1997-02-06 1998-08-12 WindmÀ¶ller & Hölscher Device for winding a web of material
US5934602A (en) * 1997-02-06 1999-08-10 Windmoeller & Hoelscher Device for winding web-shaped material
WO2003022477A1 (en) * 2001-08-24 2003-03-20 Sms Demag Aktiengesellschaft Device for winding/unwinding metal strips in particular for steel bands
US20040232272A1 (en) * 2001-08-24 2004-11-25 Winfried Leisten Strip winding and unwinding device with automatic centering
US7044418B2 (en) 2001-08-24 2006-05-16 Sms Demag Ag Strip winding and unwinding device with automatic centering
US20160236251A1 (en) * 2014-05-26 2016-08-18 Sms Group Gmbh Device for winding a strip material into a coil
US9937543B2 (en) * 2014-05-26 2018-04-10 Sms Group Gmbh Device for winding a strip material into a coil
CN107520276A (en) * 2017-08-03 2017-12-29 江苏高和智能装备股份有限公司 A kind of line-spacing take-up mechanism such as identical tension
WO2019242920A1 (en) 2018-06-21 2019-12-26 Primetals Technologies Austria GmbH Coiling a metal strip, and coiling system
EP3586987A1 (en) 2018-06-21 2020-01-01 Primetals Technologies Austria GmbH Reeling of a metallic belt and reeling installation

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Publication number Publication date
GB1216053A (en) 1970-12-16
FR2018395A1 (en) 1970-05-29

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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

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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

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Owner name: UNITED ENGINEERING ROLLING MILLS, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WEAN INCORPORATED;REEL/FRAME:004920/0256

Effective date: 19880610