US3788120A - Apparatus for hot-stretching steel wire and cable - Google Patents

Apparatus for hot-stretching steel wire and cable Download PDF

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Publication number
US3788120A
US3788120A US00278323A US3788120DA US3788120A US 3788120 A US3788120 A US 3788120A US 00278323 A US00278323 A US 00278323A US 3788120D A US3788120D A US 3788120DA US 3788120 A US3788120 A US 3788120A
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United States
Prior art keywords
steel wire
cable
caterpillar
wire
roller
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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
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US00278323A
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English (en)
Inventor
K Takeo
T Katsumata
A Hijikata
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Sumitomo Electric Industries Ltd
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Sumitomo Electric Industries Ltd
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Publication date
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    • 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

  • a pair of spaced caterpillars along a moving direction of steel wire or steel cable to be stretched comprises a pair of chain-rollers which compressively contact each other and rotate in opposite directions.
  • a heating apparatus is disposed between the caterpillars and a cooling apparatus is also disposed at another position between the caterpillars.
  • One caterpillar is disposed forwardly of the other caterpillar in the moving direction of the steel wire or cable and driven at a higher velocity than that of the other caterpillar so that a predetermined tension is applied on the moving steel wire or cable between the caterpillars.
  • Each chain-roller of the pair includes holder members which are provided in facing relation to and urged, under liquid pressure, against those of the other chain-roller.
  • Each of the holder members has an upper part holding the steel wire or steel cable and a lower part connected to the chain-roller, the parts being formed of metal, and the upper part is supported by the lower part through a resilient plate.
  • the present invention relates to an apparatus of manufacturing at least one steel wire or steel cable having a small relaxation, particularly steel wire or steel cable suitable to be used as steel tendons in prestressed concrete, by means of hot-stretching thereof.
  • a primary object of the present invention is to provide a stretcher apparatus for hot-stretching steel wire or steel cable which can hot-stretch the steel wire or steel cable with a uniform tension load applied on the steel wire or steel'cable to be processed by preventing the moving steel wire or steel cable from slipping.
  • Another object of the present invention is to provide a hot-stretching apparatus for steel wire or steel cable which can apply a substantially constant tension load on the steel wire or steel cable to be processed and hotstretch it uniformly by readily controlling the tension on the moving steel wire or steel cable.
  • Another object of the present invention is to provide an installation which is simple in construction and easy in operation and by which steel wire or steel cable of uniform quality with small relaxation can be manufacthe wire or cable with exerting thereon a uniform tension load.
  • the present invention resides in a hot stretching apparatus comprising a pair of spaced caterpillars located along the moving direction of steel wire or steel cable to be stretched, each including at least one pair of chain-rollers which are in compressive contact with each other and rotated in opposite directions.
  • a heating apparatus is disposed at a position between the caterpillars and a cooling apparatus is also disposed at an- 7 other position between the caterpillars.
  • One caterpillar tured by applying a desired substantially constant tension load on the steel wire or steel cable to be processed and hot-stretching the wire or cable.
  • the present invention provides an installation which is easily operable and has simple construction, for manufacturing steel wire or steel cable having small relaxation and uniform quality by preventing the slippage of the moving steel wire or steel cable and hot-stretching is disposed forwardly of the other caterpillar in the moving direction of the steel wire or steel cable and driven at a higher velocity than that of the other caterpillar so that a predetermined tension is applied on the moving steel wire or cable between the caterpillars.
  • each chain-roller of the pair including holder members which are provided in facing relation to and urged, under liquid pressure, againstthose of the other chain-roller, and that each of the holder members has an upper part holding the steel wire or cable and a lower part physically connected to the chain-roller, the parts being formed of metal, and that the upper part is supported by the lower part through resilient plates.
  • FIG. 1 is a schematic side view of an embodiment of a hot-stretching apparatus of steel wire and steel cable, according to the present invention
  • FIG. 2 is an enlarged front view of a portion of the embodiment in FIG. 1, and
  • FIG. 3 is an enlarged side view of a portion of the embodiment in FIG. 1.
  • the embodiment shown in the drawings includes caterpillar assemblies 2 and 3, each comprising a pair of chain-rollers provided at spaced positions along a moving direction of steel wire or cable 1 as shown in FIG. 1.
  • the caterpillar 3 is disposed forwardly of the caterpillar 2 and is driven so that it rotates in direction shown by arrows at higher velocity than the caterpillar 2 by the order of 1-1.2 percent by a suitable driving device.
  • the driving device may be separate electric motors so that both caterpillars can simultaneously be controlled or may be a single motor in which the caterpillars may be driven simultaneously through transmission mechanisms.
  • the respective caterpillars 2 and 3 have endless chain-rollers 4 and 4' which are disposed respectively, in over and under fashion, with compressive pressure urging them into contact with each other and are rotated in opposite directions.
  • chain-rollers 4 and 4' thus disposed, a plurality of holder members 12 and 12 are provided respectively as shown in FIG. 2 and the holder members on one chain roller are in facing relation to the holder members on the other chain roller with a slight gap therebetween.
  • Each of the holder members 12' provided on the lower chain-roller 4 has a metal upper part provided with a V-shaped holding groove 16 for holding the steel wire or cable 1 on the upper surface thereof and a metal plate secured at one surface to the upper part 15 by means of bolts 18, the other surface of the metal plate 20 being bonded to a rubber like resilient plate 17, as shown in FIG. 3.
  • the lower surface of the resilient plate 17 is bonded to another metal plate 21 which is bolted to a lower metal part 14 by means of bolts 18'.
  • the lower metal part 14 is welded to a chain 11' of the chain-roller 4 so that the holding member 12 is rotated with the rotation of a roller 13' of the chain roller 4'.
  • the upper metal part 15 and the lower metal part 14 of the holding member 12 may be bonded directly to the resilient plate 17, it is economical and efficient to bolt the upper part 15 and the lower part 14 to the metal plates 20 and 21 by means of the bolts 18 and 18, respectively, as described and to bond the metal plates 20 and 21 to the opposite surfaces of the resilient plate 17, because the provision of the holding member is facilitated by so doing and the upper part 15 which requires precise machining and the lower part 14 welded to the chain 11 can be reused by unfastening the bolts 18 and 18 and exchanging only the resilient plate 17 and the metal plates 20 and 21 even when the resilient plate 17 is fatigued.
  • the holder members 12 provided on the upper chain roller 4 are constructed in similar manner to the lower holding members 12.
  • a plurality of horizontally spaced liquid pressure cylinders (not shown) are provided each of which cooperates with three or four pairs of holder members 12 and 12' through a guide rail 19 to urge the members toward each other.
  • any number of the holder member pairs to be actuated by one liquid pressure cylinder and any number of the liquid pressure cylinders may be used.
  • the apparatus thus constructed, since the upper parts 15 of the holding members 12 and 12 which hold the steel wire or steel cable 1 and the lower parts 14 secured to the chain rollers 4 and 4' are formed of metal and the upper parts 15 are supported through the rubber-like resilient plates 17 by the metal lower parts 14, the resilient plates 17 intermediate between the holder members 12 and 12', even when the stretching of the steel wire or cable 1 is gradually increased from the input to the output of the caterpillar 2 and from the output to the input of the caterpillar 3, are deformed slippingly in response to such increases in elongation, and thus the upper parts 15 follow the steel wire or cable 1, resulting in no slippage between the cable 1 and the upper parts 15 which hold the cable directly and in uniform holding of the cable 1 by the plural holder members 12 and 12 through liquid pressure.
  • two or more steel wires can simultaneously be stretched by forming two or more holding grooves on the respective wire holding surfaces of the metal upper parts 15 which are supported by the rubber-like resilient plates 17 provided between the holder members 12 and 12'.
  • a numeral 5 shows a support roller positioned between the caterpillars 2 and 3 and, between the support roller 5 and the caterpillar 2, a pressure roller 6 is provided.
  • the function of the pressure roller 6 is to detect the tension strength applied on the steel wire 1 between the caterpillars 2 and 3.
  • the load or pressure exerted by the pressure roller 6 may be about one fifth to one seventh of the total tension and, consequently, a means for producing such load is sufficiently to be small sized one.
  • the load to be exerted on the steel wire 1 by the pressure roller 6 may be applied by a weight hanging from the roller 6 or a strong plate spring. However, it will be described a case where the load is applied by an oil pressure cylinder 7 as shown.
  • the detection and the regulation of tension on the moving steel wire or cable is generally performed by shifting the pressure roller 6 within the stroke range of vthe cylinder 7 and, if the roller shift is out of the range,
  • the same object of the present invention may be achieved without the pressure roller 6 by fixing the velocity difference between the caterpillars 2 and 3 after the difference, that is, the standing tension condition of the steel wire or steel cable is determined by these regulation devices.
  • Numeral 9 shows a heating device which is provided between the pressure roller 5 and the caterpillar 3 and functions to heat the steel wire to 300400 C.
  • the heating method high frequency induction heating, electric resistance heating or a hot-air, heating etc. may be used as desired.
  • a conventional cooling device such as spray 10 is provided between the heating device 9 and the caterpillar 3 and functions to cool the steel wire 1 heated by the heater 9. In this case the steel wire 1 is merely in contact with the support roller 5 and the pressure roller 6.
  • the steel wire 1 is permanently stretched between the caterpillars 2 and 3 and the relaxation properties of the wire is improved.
  • the apparatus according to the present invention is simple in construction and unexpensive in installation and, by the apparatus the regulation of tension is facilitated.
  • the steel cable it is easy to unload the same when the joints pass through the apparatus.
  • the present invention has an advantage that the steel wire or cable can be stretched with uniform load because of the special construction of the chain-rollers of the caterpillars of the hot-stretching apparatus for steel wire or cablewhich prevents the moving steel wire or cable from slipping and of the provision of the pressure roller which is simple in construction and can desirably regulate the urging pressure on the steel wire or cable and thus the tension on the wire or cable.
  • an apparatus for hot stretching steel wire comprising: a pair of longitudinally spaced caterpillar assemblies located with a space therebetween along the path of movement of a steel wire to be stretched, each caterpillar assembly including a pair of chain-rollers which compressively contact each other and rotate in opposite directions, a heating device disposed longitudinally at a position between the caterpillar assemblies, one caterpillar assembly disposed forwardly of the other caterpillar assembly in the moving direction of the steel wire and being driven at a higher velocity than that of the other caterpillar assembly so that a predetermined, high tension is applied to the moving steel wire between the caterpillar assemblies sufficient to effect stretching of said wire, the improvement wherein: each said wire relative to said first parts which grip the wire on either side thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Metal Extraction Processes (AREA)
  • Electric Cable Installation (AREA)
US00278323A 1971-08-07 1972-08-07 Apparatus for hot-stretching steel wire and cable Expired - Lifetime US3788120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1971070839U JPS5140296Y2 (enrdf_load_stackoverflow) 1971-08-07 1971-08-07

Publications (1)

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US3788120A true US3788120A (en) 1974-01-29

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US (1) US3788120A (enrdf_load_stackoverflow)
JP (1) JPS5140296Y2 (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030135971A1 (en) * 1997-11-12 2003-07-24 Michael Liberman Bundle draw based processing of nanofibers and method of making
US6732562B2 (en) 2000-05-09 2004-05-11 University Of Central Florida Apparatus and method for drawing continuous fiber
US7268063B1 (en) 2004-06-01 2007-09-11 University Of Central Florida Process for fabricating semiconductor component
US7419887B1 (en) 2004-07-26 2008-09-02 Quick Nathaniel R Laser assisted nano deposition
US7811914B1 (en) 2006-04-20 2010-10-12 Quick Nathaniel R Apparatus and method for increasing thermal conductivity of a substrate
US7897492B2 (en) 2004-02-19 2011-03-01 Quick Nathaniel R Apparatus and method for transformation of substrate
US7951632B1 (en) 2005-01-26 2011-05-31 University Of Central Florida Optical device and method of making
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same
US8067303B1 (en) 2006-09-12 2011-11-29 Partial Assignment University of Central Florida Solid state energy conversion device
US8617965B1 (en) 2004-02-19 2013-12-31 Partial Assignment to University of Central Florida Apparatus and method of forming high crystalline quality layer
US8617669B1 (en) 2006-04-20 2013-12-31 Partial Assignment to University of Central Florida Laser formation of graphene
US8828769B2 (en) 2008-12-02 2014-09-09 University Of Central Florida Energy conversion device
US9601641B1 (en) 2013-12-10 2017-03-21 AppliCote Associates, LLC Ultra-high pressure doping of materials
CN111215560A (zh) * 2020-01-12 2020-06-02 武汉科泽睿新材料科技有限公司 一种电缆拉直装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63171194U (enrdf_load_stackoverflow) * 1987-04-30 1988-11-08

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1108971A (en) * 1913-03-11 1914-09-01 Bridgeport Brass Co Speed-controlling mechanism for rolling-mills and the like.
US1653215A (en) * 1922-11-15 1927-12-20 Western Electric Co Apparatus for heat-treating metals
US2092188A (en) * 1935-07-05 1937-09-07 Simons Aaron Process and apparatus for drawing metal strips
US2292851A (en) * 1940-04-10 1942-08-11 Western Electric Co Strip feeding apparatus
US3469829A (en) * 1966-06-16 1969-09-30 Nippon Kokan Kk Apparatus for producing wire of high tensile strength

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1108971A (en) * 1913-03-11 1914-09-01 Bridgeport Brass Co Speed-controlling mechanism for rolling-mills and the like.
US1653215A (en) * 1922-11-15 1927-12-20 Western Electric Co Apparatus for heat-treating metals
US2092188A (en) * 1935-07-05 1937-09-07 Simons Aaron Process and apparatus for drawing metal strips
US2292851A (en) * 1940-04-10 1942-08-11 Western Electric Co Strip feeding apparatus
US3469829A (en) * 1966-06-16 1969-09-30 Nippon Kokan Kk Apparatus for producing wire of high tensile strength

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030135971A1 (en) * 1997-11-12 2003-07-24 Michael Liberman Bundle draw based processing of nanofibers and method of making
US7603883B2 (en) 2000-05-09 2009-10-20 University Of Central Florida Method of drawing a ceramic
US20040194526A1 (en) * 2000-05-09 2004-10-07 University Of Central Florida Apparatus and method for drawing continuous fiber
US7013695B2 (en) 2000-05-09 2006-03-21 Quick Nathaniel R Method for drawing continuous fiber
US20060070420A1 (en) * 2000-05-09 2006-04-06 University Of Central Florida Method of drawing a composite wire
US7237422B2 (en) 2000-05-09 2007-07-03 University Of Central Florida Method of drawing a composite wire
US6732562B2 (en) 2000-05-09 2004-05-11 University Of Central Florida Apparatus and method for drawing continuous fiber
US7897492B2 (en) 2004-02-19 2011-03-01 Quick Nathaniel R Apparatus and method for transformation of substrate
US8617965B1 (en) 2004-02-19 2013-12-31 Partial Assignment to University of Central Florida Apparatus and method of forming high crystalline quality layer
US7268063B1 (en) 2004-06-01 2007-09-11 University Of Central Florida Process for fabricating semiconductor component
US8080836B2 (en) 2004-06-01 2011-12-20 University Of Central Florida Embedded semiconductor component
US7419887B1 (en) 2004-07-26 2008-09-02 Quick Nathaniel R Laser assisted nano deposition
US8393289B2 (en) 2004-07-26 2013-03-12 University Of Central Florida Laser assisted nano deposition
US7951632B1 (en) 2005-01-26 2011-05-31 University Of Central Florida Optical device and method of making
US8912549B2 (en) 2005-01-26 2014-12-16 University Of Central Florida Optical device and method of making
US7811914B1 (en) 2006-04-20 2010-10-12 Quick Nathaniel R Apparatus and method for increasing thermal conductivity of a substrate
US8617669B1 (en) 2006-04-20 2013-12-31 Partial Assignment to University of Central Florida Laser formation of graphene
US8722451B2 (en) 2006-09-12 2014-05-13 University Of Central Florida Solid state energy photovoltaic device
US8067303B1 (en) 2006-09-12 2011-11-29 Partial Assignment University of Central Florida Solid state energy conversion device
US8828769B2 (en) 2008-12-02 2014-09-09 University Of Central Florida Energy conversion device
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same
US9601641B1 (en) 2013-12-10 2017-03-21 AppliCote Associates, LLC Ultra-high pressure doping of materials
CN111215560A (zh) * 2020-01-12 2020-06-02 武汉科泽睿新材料科技有限公司 一种电缆拉直装置
CN111215560B (zh) * 2020-01-12 2021-06-18 宁波聚元设计有限公司 一种电缆拉直装置

Also Published As

Publication number Publication date
JPS5140296Y2 (enrdf_load_stackoverflow) 1976-10-01
JPS4826233U (enrdf_load_stackoverflow) 1973-03-29

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