US2093484A - Apparatus for electroplating sheet metal - Google Patents

Apparatus for electroplating sheet metal Download PDF

Info

Publication number
US2093484A
US2093484A US36457A US3645735A US2093484A US 2093484 A US2093484 A US 2093484A US 36457 A US36457 A US 36457A US 3645735 A US3645735 A US 3645735A US 2093484 A US2093484 A US 2093484A
Authority
US
United States
Prior art keywords
drum
magnets
electro
bath
sheets
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
US36457A
Other languages
English (en)
Inventor
Schlotter Max
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US2093484A publication Critical patent/US2093484A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/008—Current shielding devices
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/06—Suspending or supporting devices for articles to be coated

Definitions

  • My invention relates to apparatus for electroplating metal sheets in continuous succession.
  • An object of my invention is to increase the output or capacity of electroplating apparatus 5 and to simplify the operation of such apparatus.
  • successive metal sheets are automatically secured and held in position by electro-magnetic means'before and during their passage through the electroplating bath, and after such passageare automatically released by a de-energization of the electro-magnetic means.
  • electro-magnets are arranged in groups, one group for each sheet, on a carrying element such as a rotating drum, and the wiring circuits for the groups'of electro-magnets are so arranged that the magnets of each group will be energized so as to hold a plate magnetically at a definite position of the carrying element immediately in advance of its movement intothe 20 definite position after passing through the electroplating bath;
  • the carrying element or rotating drum may, therefore, be set in operation, the sheets to be plated may be fed thereto and the plated sheets removed therefrom while the drum is rotating continuously and without stopping or interrupting the rotation of the drum or carrying element.
  • the current for energizing and de-energizing may be switched on and off manually,or by any suitable'mechanical means. vthe respective currents for the drums are preferably controlled automatically.
  • w c Fig. 1 is a. longitudinal section through a plating drum embodying a preferred form of the in- 40 tures not essential to the invention.
  • Fig. 2 is a cross section of the drum.
  • Fig. 3 is a diagrammatic sketch of the electrical connections to the several magnetic groups in the drum.
  • Fig. 4 is a. part cross section of the drum similar to Fig. 2 showing the discharge of the plated sheets therefrom.
  • the sheets to be plated are carried through an-electroplatingbath electroplating bath, and will be de-energized at a vention, omitting constructional details and feai6, ll and are de-energized in advance oi the pended below the surface of the drum dipping into the electroplating bath.
  • the metal sheets to be plated are carried through the bath Ill in succession on the cylindricalsurface of the drum ll, passing from one 5 side of the bath in Fig. 2 to the opposite side where the plated sheets are discharged.
  • the plates are held onto the surface of the drum H by electro-magnets which are arranged in groups, the successive sheets being held by successive groups of electro-magnets.
  • the electro-magnets of each group are arranged in successive rows, i5, i6, I], l8, l9 and 20, the rows 15 and I6 constituting one group,
  • n and I8 a second group and I9 and a third 20 group.
  • each row, l5--20 has three electro-magnets. It will be understood that these are shown merely by way of example and I that the number of electro-magnets in a group may be increased, if desired; as may also the number of rows of electro-magnets.
  • the several collector rings 33-38 are not continuous but are interrupted and broken so that the respective circuits to the successive rows of electro-magnets are opened and 'closed to deenergize and energize the groups of electro-magnets in succession.
  • the first row of. each group is energized some .time in advance of the second row; for example, the electr c-magnets I5, I! and I! are energized in advance of the electro-magnets i3, i3 and 20.
  • the latter rows de-energizing of the first rows l5, l1 and I9, as shown in Fig. 3.
  • the collector ring 33 extends through an are of 270 and, therefore, passes beyond its respective brush 39 and disconnects the row of electromagnets l 5 upon the further rotation of the drum I 6, as after the de-energizing of the electromagnets 16.
  • the initial row of electro-magnets is energized, then upon the rotation of the drum sufficient to bring the rear edge portion of the sheet 40 into the drum, a second row of electro-magnets is energized; then the drum rotates through 180, suflicient to carry the sheet through the electroplating bath and the rear edge of the sheet above the bath.
  • the drum l I is hollow and liquid proof, being formed of two end plates 42 and 43 and a cylindri-v cal plate 44 of sheet iron or other suitable metal coated throughout with an insulating and waterproofing material such as rubber.
  • the end plates :42 and 43 project beyond the surface of the cylindrical plate 44 to form flanges 45 and 46, respectively, which serve to confine the current between the electrodes 3 and the plates or sheets 40.
  • the end plates 42 and 43 are provided with discs 4'! of copper or brass, or other conductive material, to increase the electrical conductivity between the shaft I2 and the cylinderical wall 44.
  • the exterior surface of the drum ll may be separated into separate electro-magnetic areas by means of partitions 48 parallel to the axis of the drum, there being two such partitions between successive groups of magnets.
  • These longitudinally extending walls 48 enclose a space that is free from magnetic field and thus form neutral zones.
  • the neutral zones may, however, be narrower than that indicated in the drawings, and may be dispensed with entirely.
  • These walls 48 also have the advantage, as indicated at the right in Fig. 2, of forming a rest against which the sheet may be stopped when inserted between an electro-magnet and the roller 4
  • the sheets 40 do not rest directly on the surface of the drum but are supported on spaced contact rails 50 following the curvature of the drum and electrically connected to each other by crossbars 5
  • each sheet 40 is screened or shut off from the electroplating current by projecting flanges 45 and 46 and the dividing partitions 48.
  • the sheets may be still further screened by providing a covering or sheet 52 covering the electro-magnets of each group and supported on the contact rails 50. These sheets may also be fastened directly to the heads of the electro-magnets l520.
  • the sheet 52 would thus not only form a backing to support the sheets 40 to be plated but would also aid in distribution of current throughout the area of the sheets 40.
  • the covering sheet 52 is preferably made of iron of high magnetic permeability or susceptibility so as to increase and distribute the magnetic flux and thus tend to hold the sheets to be plated onto the supporting sheet 52. If the sheets 40 are relatively thick, however, the supporting sheet need not be of iron because the magnetic flux is sufficiently large with thick sheets to afford good-adherence of the sheets'to the magnets and to the supporting sheet 52. To still further improve the screening effect, the rims or edges-of the supporting sheet 52 and the entire back of the sheet, except where contact is made with the rails 50,- may be coated with rubber. The rubber also serves to prevent the electro-deposition of metal at the front edge when the sheets to be plated are smaller than the supporting plate.
  • the curvature of these sheets is not continued uniformly to their ends, but is permitted to straighten somewhat as shown in Fig. 4.
  • the magnets are correspondingly offset from a radial position.
  • the magnets I520 may be secured on the drums by means of a flange 53 on each magnet, which is secured in a socket on the drum by means of a screw cap 54.
  • the coating material which serves to insulate the drum casing may be inserted between the screw caps and the socket on the drum casing and thus serve to seal the magnets.
  • successive sheets 40 may be inserted in position between the roller 4
  • the rotation of the drum will cause the roller 4
  • the further rotation of the drum carries the plates downwardly through the electroplating bath facing the anodes I4, and then upward above the level of the electrolyte. Shortly after the rear edge of the sheet clearsthe electroplating bath, the second mitting the sheet to straighten to the position shown in Fig, 4. Thereafter :the electro-magnet I5 is de-energized and the-sheet falls outside of the electroplating bath.
  • the invention provides an apparatus whereby a succession of sheets may be quickly and automatically passed through an electroplating bath and with a minimum of labor.
  • Electroplating apparatus which comprises an electroplating bath, a drum partly immersed in said bath and rotatable on a horizontal axis, means to secure plates to be plated to the cylindrical surface of saiddrum, said means comprising groups of electro-magnets, there being two longitudinal rows of electro-magnets.' in each group, and means comprising collector rings and brushes to energize successively the first and last rows of each of said groups immediately before entering said bath and for de-energizing the first and last rows of each group in succession after leaving said bath.
  • Electroplating apparatus which comprises an electroplatingbath, a drum partly immersed in said bath and rotatable on a horizontal axis, means to secure plates to be plated to the cylindrical surface of said drum, said means comprising groups of electro-magnets, there being two longitudinal rows of electro-magnets in each group, and means comprising collector rings and brushes to energize successively the first and last rows of each of said groups immediately before entering said bath and for de-energizing the first and last rows of, each group in succession after leaving said bath, said drum having means to shield the inner face of a plate held thereon.
  • Electroplating apparatus which comprises an electroplating bath, a drum partly immersed in said bath and rotatable ona horizontalaxis, and means to secure plates to be plated to the cylindrical surface of said drum, said means comprising groups of electro-magnets, each group comprising two longitudinally disposed rows, one for the front and one for the rear edge of a plateto be plated, said drum having a hollow shaft,
  • collector rings on said shaft one for each row of electro-magnets, said collector rings being interrupted at an interval and a contact brush for each said ring so positioned as to contact said ring and to close the energizing circuit for each row before entering said bath and to reach said interruption and de-energize it upon leaving said bath.
  • Electroplating apparatus which comprises an electroplating bath, a drum partly immersed in said bath and rotatable on a horizontal axis, means to secure plates to be plated to the cylindrical surface of said drum, each of said means.
  • Electroplating apparatus which comprises an electroplating bath, a drum partly immersed in said bath and rotatable on a horizontal axis,
  • Electroplating apparatus which comprises an electroplating bath, a drum partly immersed in said bath and rotatable on a horizontal axis, means to secure plates to be plated to the cylindrical surface of said drum, each of said means comprising two rows of electromagnets extending lengthwise of said drum at circumferentially spaced intervals, and means to energize the elecin said bath and rotatable on a horizontal axis,
  • each of said means comprising two rows of electromagnets extending lengthwise of said drum at circumferentially spaced intervals, and means to energize the electromagnets of each group immediately before they are rotated into said bath and to de-energize said electromagnets immediately after leaving said bath in which supporting rails of highly conductive metal are positioned'betweenisuccessive rows of magnets of said groups, and iron supporting plates mounted on said rails.
  • Electroplating apparatus which comprises an electroplating bath, a drum partly immersed in said bath androtatable on a horizontal axis,
  • each of said means comprising two rows of electromagnets extending lengthwise of said drum at circumferentially spaced intervals, and means to energize the electromagnets of each group immediately before they are rotated into said bath and to de-energize said electromagnets immediately after leaving group of electromagnets, in which said electromagnets are enclosed, means to energize the magnets of each group upon entering said bath, means to dc-energize said electromagnets of each group upon leaving said bath and 'a supporting surface for plates mounted on said drum.

Landscapes

  • 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)
  • Coating With Molten Metal (AREA)
US36457A 1935-04-04 1935-08-16 Apparatus for electroplating sheet metal Expired - Lifetime US2093484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH106736D DE636490C (de) 1935-04-04 1935-04-04 Vorrichtung zum Plattieren von Blechen

Publications (1)

Publication Number Publication Date
US2093484A true US2093484A (en) 1937-09-21

Family

ID=27770792

Family Applications (1)

Application Number Title Priority Date Filing Date
US36457A Expired - Lifetime US2093484A (en) 1935-04-04 1935-08-16 Apparatus for electroplating sheet metal

Country Status (5)

Country Link
US (1) US2093484A (de)
AT (1) AT150291B (de)
CH (1) CH191021A (de)
DE (1) DE636490C (de)
FR (1) FR804515A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415979A (en) * 1945-04-24 1947-02-18 United Aircraft Corp Combined spark plug and oscillatory circuit
US2440297A (en) * 1945-05-04 1948-04-27 William E Riecken Jr Apparatus for and method of electroforming of rectifier elements
US2911347A (en) * 1957-04-01 1959-11-03 Intercompany Corp Plating rack
US2940584A (en) * 1956-05-08 1960-06-14 Eastman Kodak Co Roll film processing apparatus
US4645885A (en) * 1984-05-08 1987-02-24 Bellheimer Metallwerk Gmbh. Endless conveyor
EP2733238A1 (de) * 2012-11-16 2014-05-21 Cyklos SA Oberflächenbehandlungsverfahren, entsprechender Kessel und entsprechende Maschine zur Umsetzung dieses Verfahrens

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415979A (en) * 1945-04-24 1947-02-18 United Aircraft Corp Combined spark plug and oscillatory circuit
US2440297A (en) * 1945-05-04 1948-04-27 William E Riecken Jr Apparatus for and method of electroforming of rectifier elements
US2940584A (en) * 1956-05-08 1960-06-14 Eastman Kodak Co Roll film processing apparatus
US2911347A (en) * 1957-04-01 1959-11-03 Intercompany Corp Plating rack
US4645885A (en) * 1984-05-08 1987-02-24 Bellheimer Metallwerk Gmbh. Endless conveyor
EP2733238A1 (de) * 2012-11-16 2014-05-21 Cyklos SA Oberflächenbehandlungsverfahren, entsprechender Kessel und entsprechende Maschine zur Umsetzung dieses Verfahrens
WO2014076664A2 (fr) 2012-11-16 2014-05-22 Cyklos Sa Procédé de traitement de surface, cuve et machine mettant en oeuvre le procédé
WO2014076664A3 (fr) * 2012-11-16 2014-09-12 Cyklos Sa Procédé de traitement de surface, cuve et machine mettant en oeuvre le procédé

Also Published As

Publication number Publication date
AT150291B (de) 1937-07-26
FR804515A (fr) 1936-10-26
DE636490C (de) 1936-10-08
CH191021A (de) 1937-05-31

Similar Documents

Publication Publication Date Title
US2044415A (en) Method and apparatus for electrodeposition
US2503863A (en) Apparatus for electroplating the inside of pipes
US2588699A (en) Electrophotographic apparatus
US2093484A (en) Apparatus for electroplating sheet metal
US1601642A (en) Apparatus for the electrodeposition of metals on wire or narrow strip
DK141970B (da) Fremgangsmaade og apparat til katodisk behandling af tynde elektrisk ledende fiberstrenge eller bundter
CA1049955A (en) Apparatus and method for electroplating
BE805854A (fr) Appareil et procede permettant d'enlever d'une cathode un depot electrolytique
FI50717C (fi) Menetelmä ja laite elektrolyyttisesti saostetun metallilevyn, varsinki n kupari-, nikkeli- tai sinkkilevyn irrottamiseksi katodilta
US2624728A (en) Electroplating barrel
US2051928A (en) Electrodeposition
US3785952A (en) Support for mounting small parts in electroplating processes
JPS59177390A (ja) 動いている金属ストリツプを片側電気メツキする方法及び装置
US1855809A (en) Electrodeposition of organic material
GB949836A (en) Apparatus for use in the coating of electrically conducting members by the process of electrophoresis
US1858125A (en) Galvanizing or electroplating process
US2549927A (en) Electrostatic detearing apparatus
US3356605A (en) Electrodeposition monitor
EP0002832B1 (de) Verfahren und Vorrichtung zum Aufbringen von photoleitenden Überzügen durch Kathodenzerstäubung auf endlose flexible Bänder oder Zylinder
US2916620A (en) Electrostatic discharge treating apparatus
US2690424A (en) Apparatus for reduction of heavy edge coating in electroplating
US1381882A (en) Electrolytic apparatus and process
JP2018165378A (ja) 部分めっき用マスク部材、部分めっき装置および部分めっき方法
US4265996A (en) Method of improving the electrical contact between the insulating image carrier and conductive support in electrographic recording processes
KR100748787B1 (ko) 도금 장치 및 이를 이용한 도금 방법