US3325764A - Collector head - Google Patents

Collector head Download PDF

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Publication number
US3325764A
US3325764A US431265A US43126565A US3325764A US 3325764 A US3325764 A US 3325764A US 431265 A US431265 A US 431265A US 43126565 A US43126565 A US 43126565A US 3325764 A US3325764 A US 3325764A
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US
United States
Prior art keywords
contact
drum
ring
braid
secured
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
US431265A
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English (en)
Inventor
Clemson H Ward
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.)
Bethlehem Steel Corp
Original Assignee
Bethlehem Steel Corp
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 Bethlehem Steel Corp filed Critical Bethlehem Steel Corp
Priority to US431265A priority Critical patent/US3325764A/en
Priority to DE1496734A priority patent/DE1496734C3/de
Priority to JP41006081A priority patent/JPS5017422B1/ja
Priority to GB4575/66A priority patent/GB1135611A/en
Application granted granted Critical
Publication of US3325764A publication Critical patent/US3325764A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/64—Devices for uninterrupted current collection
    • H01R39/643—Devices for uninterrupted current collection through ball or roller bearing
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils
    • C25D7/0657—Conducting rolls
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/64—Devices for uninterrupted current collection

Definitions

  • the strip may pass through an electrolytic plating cell in either a horizontal or vertical direction.
  • An electrode connected to a source of electric current, is disposed in the electrolyte in the plating cell in close proximity to the path of the strip through the electrolyte.
  • a rotatable contact roll engages the strip outside the cell, and the roll is connected to the opposite pole of the electric source to complete the electric circuit through a portion of the strip.
  • the moving strip In the horizontal type of plating, there are generally a plurality of plating cells, with the moving strip normally contacting a contact roll at the exit end of each cell.
  • the strip passes between two rolls, with a metal, usually steel, contact roll at the top, and a backing roll, covered with some non-conductive substance such as rubber, bearing on the strip immediately below the contact roll.
  • the contact rolls which are generally made in the form of a hollow cylinder, may vary in diameter, depending on the type of operation, from possibly 3 inches to 15 inches or more. In a modern, high speed tinplating line of the horizontal type, the roll will have a diameter of about inches, and a length sufiicient to take care of at least a 36 inch-wide strip. Each end of the roll has a reduceddiameter portion to form a journal which fits within a journal bearing.
  • Brushes provided relatively satisfactory operation for tin lines operating at speeds of from 500 to 600 feet per minute.
  • a serious torque problem develops through the use of the brush type current collector.
  • An object of this invention is to provide a collector head which generates a minimum of torque on an electroplating contact roll.
  • Another object is to provide a liquid cooled collector head which can be readily removed or replaced when not in operation.
  • a further object is to provide means for maintaining the correct tension on the contact elements of a collector head, and for changing such tension as necessary.
  • Another object is to provide a collector head which is self-supporting, and which follows any change in contact roll alignment.
  • FIG. 1 is a vertical section of the complete assembly taken along the line 11 of FIG. 2.
  • FIG. 2 is an end view of the assembly, part of which is in section taken along the line 2-2 of FIG. 1.
  • FIG. 3 is an end view showing tensioning means.
  • FIG. 4 is a plan view of a contact drum and one contact braid.
  • FIG. 5 is an end view of the tension rings, braid and contact drum.
  • the improved collector head includes a contact plate, which is made integral with part of the collector head housing.
  • a contact plate which is made integral with part of the collector head housing.
  • the opposite ends of these elongated contact members are fastened to rotatable tensioning discs, or rings.
  • the drum is connected both mechanically and electrically to the end portion of a contact roll, or other electrically conducting, rotating element.
  • the housing is of closed construction so as to permit containment and circulation of cooling liquid in the vicinity of the contact members and the contact drum.
  • At the free end of the drum there is located spring-mounted means for adjusting tension on the tensioning rings.
  • the rings supply tension to the contact members.
  • steel contact roll 10 has a tapered, reduced end portion 11 in metal-to-metal fit with, and bolted at 14 to, brass roll flange 12.
  • Flange 12 is in turn attached to brass collector head flange 13 by means of six bolts indicated at 16.
  • An aluminum bronze contact drum 15 is secured to flange 13 by means of six bolts indicated at 17.
  • conductivity between drum 15 and flange 13 could also be enhanced by constructing the drum and flange in one piece.
  • the brass collector head casing 18 is an integral part of contact plate 19. Actual removal of current from drum 15 is performed by a series of eight strips 20 which can be, for example, 1% inch wide, ,5, inch thick, and of a soft electrically conductive material ofcopper contact braid having a contact length of, for example, about four inches.
  • One end of each braid is secured physically and electrically to brass contact plate 19 by means of brass clamping ring 21 and bolts 22.
  • the other end of each braid is secured between two ten-sioning rings 23 and 24, the two rings being held together by stainless steel cap screw 62.
  • the braids are arrayed longitudinally, and in spaced relation, around the periphery of contact drum 15.
  • the braids must be placed under sufficient wrapping tension to ensure good contact between braid and drum. Tension is maintained by a constant rotative force applied to brass tension rings 23 and 24 by five tension springs 48. The torque applied to rings 23 and 24 causes spiral wrapping of the braid around the drum, and is supplied in a direction counter to the operational rotation of the drum.
  • the spring load is set to about 75 to 100 inch pounds, in'a manner which will be described.
  • the braids may be prestressed in a spiral configuration so that when they are attached to rings 23 and 24 and to ring 21, they will have already assumed the approximate contour in which they are used in operation. Inserting the braids in a direction away from the axis of the drum, in a prestressed condition, will improve wear of both drum and braid.
  • collector head housing Completing the collector head housing is a brass casing cap 25, joined to casing 18 by bolts indicated at 26. By this union, the housing provides a closed container, except for water inlets and outlets described below, for the circulation of cooling Water about drum and braids 20.
  • Contact drum 15 which, in this example, rotates in a counter-clockwise direction in concert with contact roll 10, has a cylindrical opening at the free end in which it supports a steel shaft 29.
  • the shaft is attached to casing cap 25 by bolts 30.
  • Bearing support for shaft 29 within drum 15 is provided by roller bearing housing 31.
  • insulating Bakelite bushing 32 is inserted between shaft 29 and bearing 31, while Bakelite washers 33 prevent lateral movement of the bearing, the complete bearing assembly being secured to the shaft by steel retaining nut 34.
  • Ball bearing housing 38 provides additional support for the collector head casing, housing 38 being retained in place between casing section 18 and drum 15 by Bakelite bushing 39 and 39, as well as Bakelite insulating bushing 60. Rubber seals 40 and 41 are provided to retain cooling water within the collector head housing proper. Seals 40 and 37 also confine lubricating grease within the area occupied by the bearings.
  • inlets 27 and outlet 28 provide for the circulation of cooling water about the elements of the collector head, the water entering the housing at inlet nozzle 27.
  • Water within the housing will be made to circulate about the exposed sides of the braids and exposed areas of the outside drum surface. Water acts as both coolant and lubricant, and as such increases the useful life of both the braids and the drum.
  • the casing being provided with seals 40' and 41, forms a water-tight compartment for the lubrication and cooling of braids and drum.
  • O ring gasket 42 is located between spring tension and sealing ring 43 and casing section 25.
  • Additional means are provided to prevent leakage of water into the bearing areas by inclusion of drain slots 44 and 45.
  • An inspection hole 46 fitted with a transparent cover 63, is located at the top of the housing in casing section 18.
  • An air vent 64 is also located at the top of casing section 18.
  • collector head housing assembly comprising contact plate 19, casing sections 18 and 25, and all structures attached thereto, are supported on drum 15 by tightly fitting bearing housings 31 and 38.
  • the assembly is held stationary by means of heavy wire connections 47 attached to contact plate 19.
  • the selfsupporting feature of the collector head is important, in that this feature permits the head to accommodate to any change in alignment of the contact roll, the head thus being in constant alignment with said roll.
  • Casing cap 25 is provided with a threaded stud 61 for the purpose of pushing the cap away from the assembly, when it is desired to remove the cap therefrom.
  • a series of five bronze wire springs 48 is located between tension ring 24 and brass spring tension and sealing ring 43. Referring to the uppermost spring 48 in FIG. 1, one end of spring 48 is attached to bolt 49, the bolt in turn being secured to ring 24. The other end of spring 48 is attached to bolt 49 which is in turn secured to ring 43.
  • tension is applied to each of the springs 48.
  • the load applied to the spring moves ring 24, along with its companion ring 23, in the same rotational direction as ring 43.
  • braid tension for the apparatus described in this example is maintained by applying a load of between about 75 and inch pounds to the springs 48.
  • Spanner-engaging pins 52 secured to ring 43, extend through slots 53 located in casing cap 25, as shown in FIGURES 2 and 3.
  • ring 43 may be rotated to subject springs 48 to sufficient tension to in turn rotate tension rings 23 and 24.
  • lock nut 56 operating in slot 53, is tightened, so that the desired load can be maintained on the braids indefinitely.
  • any rotation of the rings extends the braid, and tends to pull it in a line diagonal to the axis of drum 15.
  • the course taken by the extended braid, in relation to the drum axis, is shown in FIG. 4.
  • the diagonal pull put on the braid by rotation of drums 23 and 24 will produce torsion in the braid, although the braid tends to assume substantially the contour of the contact drum against which it is held.
  • FIGS. 4 and 5 The helical direction taken by the braid and the manner by which the braid is held in position by the tension rings, is clearly shown in FIGS. 4 and 5.
  • a plug fits into a drilled one inch hole 50 at the bottom of casing 18. When the plug is removed, the opening acts as a drain slot.
  • the interior of the assembly can be washed to remove fine particles of copper-bearing powder dislodged from the braids and drum. Washing results in a sludge at the bottom of the clasing, which sludge can be removed through the drain 5 ot.
  • the collector head of the example is designed to operate at 4500 amperes. By increasing the size of the head a corresponding increase in current capacity can be obtained. Ordinarily, in a tinplating line, a collector head will be located at each end of the contact roll.
  • the copper braid may be any commercial braid made from copper or copper-bearing wire of small diameter.
  • the braid should be made from wires having a diameter of approximately 0.010 inch, to produce optimum flexibility and wear in conjunction with a contact drum of convenient size, e.g. about 3 inches in diameter.
  • the most desirable braid wire diameter will be dependent to some extent on the diameter of the contact drum.
  • the contact drum which, in the examples given, has a diameter of about 3 inches, and length of inches, may be made from a bronze alloy of the nature of beryllium bronze or aluminum bronze, or from any highly electrically conductive metal having a surface hardness suflicient to withstand the wear to which it is subjected. Mill tests have shown that an aluminum bronze drum-in one instance a drum having a composition of approximately 7.5% aluminum, 2% silicon and the remainder copperwill have a drum wear life of about three to four times that of a drum made from beryllium bronze. Aside from improved wear of the drum itself, when an aluminum bronze drum has been used for a period of 600 hours, only a scattered few wires of the contact braid are cut during the life of the drum. When beryllium bronze has been used as the drum material, neraly half of the contact braid wires have been cut through when in use for a much shorter operating period.
  • the apparatus described herein comprises a lightweight assembly, which can be readily removed or replaced when contact roll changes are necessary, or when replacement parts to the assembly itself are required. Damage to parts during removal or replacement of the assembly is substantially completely obviated. Moreover, the assembly provides a self-supporting device of high electrical efiiciency and low drag torque.
  • the invention is not limited to electroplating, but can be applied to any electrical operation where current is collected from a rotating conductive member of cylindrical configuration.
  • a liquid cooled current collecting device which comprises a contact drum secured at one end to a rotary contact member, a housing enclosing said drum, a contact plate attached to said housing and a plurality of pliable contact sections secured at one end to said contact plate and aligned in a helical configuration around the periphery of, and in contact with, said drum, a rotatable ring mounted in said housing and securing the other end of said contact sections, means to maintain torque on said ring, and means for changing the degree of torque on said ring.
  • a liquid cooled current collecting device the combination which comprises a contact drum secured at one end to a rotary contact member, a housing enclosing said drum, a contact plate attached to said housing and a plurality of pliable contact sections secured at one end to said contact plate and aligned in a helical configuration around the periphery of, and in contact with, said drum, dual rotatable rings mounted in said housing and securing the other end of said contact sections, means to maintain torque on said rings, and means for changing the degree of torque on said rings.
  • a liquid cooled current collecting device which comprises a metal contact drum secured at one end to a rotary contact member, a metal 6 housing enclosing said drum and supported on said drum, a metal contact plate attached to said housing and a plurality of pliable metal contact sections secured at one end to said contact plate and aligned in a helical configuration around the periphery of, and in contact with, said drum, a rotatable ring mounted in said housing and securing the other end of said contact sections, means to maintain torque on said ring, and means for changing the degree of torque on said ring.
  • a liquid cooled current collecting device which comprises a metal contact drum secured at one end to a rotary contact member, a metal housing enclosing said drum and supported on said drum, a metal contact plate attached to said housing and a plurality of pliable metal contact sections secured at one end to said contact plate and aligned in a helical configuration around the periphery of and in contact with, said drum, dual rotatable rings mounted in said housing and securing the other end of said contact sections, means to maintain torque on said rings, and means for changing the degree of torque on said rings.
  • a liquid cooled current collecting device which comprises a metal contact drum se cured at one end to a rotary contact member, a metal housing enclosing said drum and supported on said drum, a metal contact plate attached to said housing and a plurality of metallic braids secured at one end to said contact plate and aligned in a helical configuration around the periphery of, and in contact with, said drum, a rotatable ring mounted in said housing and securing the other end of said contact sections, means to maintain torque on said ring, and means for changing the degree or torque on said ring.
  • a liquid cooled current collecting device which comprises a bronze contact drum secured at one end to a rotary contact member, a housing enclosing said drum, a contact plate attached to said housing and a plurality of pliable contact sections secured at one end to said contact plate and aligned in a helical configuration around the periphery of, and in contact with, said drum, a rotatable ring mounted in said housing and securing the other end of said contact sections, a plurality of springs for supplying torque to said ring, a combination rotatable spring tension and liquid sealing ring for supplying tension to said springs, and means for securing said spring tension ring in fixed position.
  • a liquid cooled device for collecting current from a rotatable contact roll
  • the combination which comprises an aluminum bronze contact drum secured at one end to said roll, a brass housing enclosing said drum and supported thereon, a brass contact plate attached to said housing and a plurality of copper wire braid contact sections secured at one end to said contact plate and aligned in a helical configuration around the periphery of, and in contact with, said drum, dual brass rotatable tension rings mounted in said housing and securing the other end of said contact sections, a plurality of bronze wire springs for supplying torque to said rings, a combination rotatable brass spring tension and liquid sealing ring for supply ing tension to said springs and means for securing said spring tension ring in fixed position.
  • a liquid cooled current collecting device the combination which comprises a metal contact drum secured at one end to a rotary contact member, a metal housing enclosing said drum and supported on said drum, a metal contact plate attached to said housing and a plurality of pliable metal contact sections secured at one end to said contact plate and aligned in a helical configuration around and in contact with said drum, dual rotatable rings mounted in said housing and securing the other end of said contact sections, restraining means to prevent axial movement of said rings toward said contact plate, and means for applying a variable and controlled torque on said rings suificient to cause a spiral wrapping of said contact sections about the periphery of said drum.
  • a current collecting device comprising a contact drum adapted to be secured at one end to a rotary contact member, a contact plate disposed around one end of said drum, a rotatable ring disposed about the opposite end of said drum, a plurality of pliable metal contact sections secured at one end to said contact plate and secured at the other end to said ring, and means for rotating said ring a distance sufiicient to Wrap said contact sections in a helical configuration at least partially around the periphery of said drum and in contact with said drum.
  • a current collecting device comprising a contact drum adapted to be secured at one end to a rotary contact member, a contact plate disposed around said drum at the end nearest said contact member, and in bearing relation therewith, a rotatable ring disposed about the opposite end of said drum in relation to said contact member and in bearing relation with said drum, a plurality of pliable metal contact sections secured at one end 8 to said contact plate and secured at the other end to said ring and means for rotating said ring a distance sufficient to Wrap said contact sections in a helical configuration at least partially around the periphery of said drum and in contact with said drum.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Motor Or Generator Current Collectors (AREA)
US431265A 1965-02-09 1965-02-09 Collector head Expired - Lifetime US3325764A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US431265A US3325764A (en) 1965-02-09 1965-02-09 Collector head
DE1496734A DE1496734C3 (de) 1965-02-09 1966-02-01 Flüssigkeitsgekühlte Strom-Kollektorvorrichtung an einer Kontaktwalze
JP41006081A JPS5017422B1 (enrdf_load_stackoverflow) 1965-02-09 1966-02-02
GB4575/66A GB1135611A (en) 1965-02-09 1966-02-02 Electrical collector head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US431265A US3325764A (en) 1965-02-09 1965-02-09 Collector head

Publications (1)

Publication Number Publication Date
US3325764A true US3325764A (en) 1967-06-13

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US431265A Expired - Lifetime US3325764A (en) 1965-02-09 1965-02-09 Collector head

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US (1) US3325764A (enrdf_load_stackoverflow)
JP (1) JPS5017422B1 (enrdf_load_stackoverflow)
DE (1) DE1496734C3 (enrdf_load_stackoverflow)
GB (1) GB1135611A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710131A (en) * 1986-05-12 1987-12-01 Litton Systems, Inc. Limited rotation twist capsule
US5155405A (en) * 1991-03-08 1992-10-13 Elpatronic Ag Electrode roller with flexible current transmitting disc
EP2623646A4 (en) * 2010-10-01 2015-09-23 Think Labs Kk DEVICE FOR PLATING A CYLINDER

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US421320A (en) * 1890-02-11 Collecting-contact for electric machines
US1082571A (en) * 1908-11-13 1913-12-30 Westinghouse Electric & Mfg Co Commutator-brush.
US2438007A (en) * 1945-09-07 1948-03-16 Westinghouse Electric Corp Trolley conductor device
US2583747A (en) * 1946-01-26 1952-01-29 Gordon Specialties Company Rotary antenna
US2773247A (en) * 1951-10-03 1956-12-04 Crown Cork & Seal Co Current collector for rotary shaft of electroplating apparatus
US3021497A (en) * 1959-09-18 1962-02-13 Taylor Winfield Corp Low loss anti-friction current transfer means for rotating devices
US3176410A (en) * 1958-02-12 1965-04-06 Ampco Metal Inc Aluminum bronze cylindrical shell

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US421320A (en) * 1890-02-11 Collecting-contact for electric machines
US1082571A (en) * 1908-11-13 1913-12-30 Westinghouse Electric & Mfg Co Commutator-brush.
US2438007A (en) * 1945-09-07 1948-03-16 Westinghouse Electric Corp Trolley conductor device
US2583747A (en) * 1946-01-26 1952-01-29 Gordon Specialties Company Rotary antenna
US2773247A (en) * 1951-10-03 1956-12-04 Crown Cork & Seal Co Current collector for rotary shaft of electroplating apparatus
US3176410A (en) * 1958-02-12 1965-04-06 Ampco Metal Inc Aluminum bronze cylindrical shell
US3021497A (en) * 1959-09-18 1962-02-13 Taylor Winfield Corp Low loss anti-friction current transfer means for rotating devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4710131A (en) * 1986-05-12 1987-12-01 Litton Systems, Inc. Limited rotation twist capsule
US5155405A (en) * 1991-03-08 1992-10-13 Elpatronic Ag Electrode roller with flexible current transmitting disc
EP2623646A4 (en) * 2010-10-01 2015-09-23 Think Labs Kk DEVICE FOR PLATING A CYLINDER

Also Published As

Publication number Publication date
JPS5017422B1 (enrdf_load_stackoverflow) 1975-06-20
DE1496734B2 (de) 1974-10-31
DE1496734C3 (de) 1975-06-19
GB1135611A (en) 1968-12-04
DE1496734A1 (de) 1969-07-31

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