US3693236A - Method of detaching galvanically produced sheets from master sheets - Google Patents

Method of detaching galvanically produced sheets from master sheets Download PDF

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Publication number
US3693236A
US3693236A US33158A US3693236DA US3693236A US 3693236 A US3693236 A US 3693236A US 33158 A US33158 A US 33158A US 3693236D A US3693236D A US 3693236DA US 3693236 A US3693236 A US 3693236A
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United States
Prior art keywords
master
sheet
sheets
composite
rollers
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Expired - Lifetime
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US33158A
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English (en)
Inventor
Gerhard Kapell
Anton Schummer
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Individual
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Individual
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
    • C25C7/06—Operating or servicing
    • C25C7/08—Separating of deposited metals from the cathode
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4981—Utilizing transitory attached element or associated separate material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y10T29/49821—Disassembling by altering or destroying work part or connector

Definitions

  • ABSTRACT This specification describes the mechanical separation of galvanically-formed metal sheets from a master by subjecting a composite, consisting of a master sheet and a formed sheet on each side of said master, to the action of multiple rolls disposed in non-aligned relation on both sides of said composite so as to cause said composite to bend in at least one direction without any substantial decrease in the cross-sectionthereof.
  • This controlled bending causes the formed sheets to readily separate from the master sheet without manual mechanical manipulation. It is stated that slight elastic deformation of the master upon bending is sometimes desirable.
  • German Pat. No. 620,209 shows the utilization of suction to accomplish this purpose. This process has not met with particular success because it utilizes very complicated equipment and, even so, tends to leave large portions of the formed sheets on the master.
  • British Pat. No. 455,360 shows a process whereby a master having formed sheets on each side is passed between rollers rotating at different speeds. According to this process, one of the formed sheets is thereby removed; and if the remaining composite is subjected to a second similar operation, the other formed sheet is removed.
  • an object of this invention to provide a novel means of separating both formed sheets from a master. It is a further object of this invention to provide a novel means of simultaneously separating two formed sheets from a master.
  • one aspect of this invention resides in a process comprising passing a composite, comprising a master having plated sheets on both sides thereof, through a multiplicity of rolls disposed on both sides thereof such as to cause said sheet to bend in at least one direction, preferably without a reduction in the cross-section thereof whereby both plated sheets are separated from the master in one operation.
  • the pressure rolls which are located on the one side of the plane of movement of the sheet to be treated are staggered with respect to the drive rolls which are located on the opposite side of the plane of movement of the sheet and are arranged adjustable at distances apart from each other and from the opposing rollers so that deformation takes place just below the elastic limit and without any reduction in cross-section.
  • the rolls are so adjusted with respect to each other that the bending takes place within the elastic region of the master sheet so that the latter is not permanently deformed, but springs back into its original shape immediately after passage through the rolls.
  • the starting sheets detach themselves from it, but the master sheet must then be rolled flat for reuse, which would require a further operation.
  • multiple sets of rolls are disposed on each side of the composite, thus causing the composite to assume a multiple bend configuration as it passes through the rolls. It is preferable in this embodiment to provide for the multiple bending to take place at just below or above the elastic limit of the master.
  • FIG. 1 is a front elevation partially in section of one apparatus adapted to practice this invention.
  • FIG. 2 is similar to FIG. 1, showing another embodiment of this invention.
  • a composite sheet 1 passes along a table 3 and through bending rolls 2 and 2a.
  • the rolls 2a are driven so as to propel the composite 1 from left to right.
  • the roll 2 need not be driven, but is so disposed as to exert pressure on the composite l and cause such to deform; depicted deformation is in an upwardly direction, but may be reversed if desired.
  • the rolls 2 and 2a are staggered in order to impart bending.
  • a table 4 can be provided positioned after the composite has passed through the bending rolls.
  • the composite 1 After the composite 1 has been bent according to this invention, it separates into a master 5, which is suitable for reuse, and the two plated sheets 6, which are stripped from the master and may be rolled or in other ways utilized in the conventional manner.
  • FIG. 2 there is seen an embodiment of this invention wherein multiple bends are imparted to the composite l-which, in this figure, is proceeding from right to left-by passing the composite off a table 3 through staggered upper pressure rolls 2 and lower driven rolls 7, whereupon the composite l separates into a reusable master 5 and two plated sheets 6 on the table 4. It may be that the roll can be used as a finishing roll to straighten out the master sheet after such has been bent and deformed by such bending.
  • tables 3 and 4 referred to above may have conveyor belts thereon or may be replaced by conveyor belts as may be desired.
  • Other types of feed and take-up devices may be similarly used.
  • the advantage of this manner of operation is, in particular, that the detachment of the two starting sheets or galvanically produced sheets is effected in a single operation.
  • the apparatus required is furthermore very simple and permits continuous operation to the exclusion of all manual work.
  • the apparatus and process hereof can be utilized to separate a composite comprising a master and a plated sheet, only on one side thereof.
  • a thin layer of oil, fat or similar material on each side of the master before electroplating in order to prevent the depositing metal sheets from too intimate a contact with the master.
  • Method of detaching an electrolytically deposited sheet from a master sheet which comprises passing a composite sheet of said master and said deposited sheets between a series of at least three staggered rollers disposed on both sides of said composite sheet wherein the rollers on one side of said composite sheet are driven and the rollers on the other side of said sheet are pressure exerting rollers to plastically deform said master sheet without a reduction in cross section by passage of said composite between said rollers whereby subjecting said composite sheet to at least two alternating bends and separating said master sheet from said electrolytically deposited sheet after passage of said composite sheet through said rollers.
  • Method as claimed in claim 1 including straightening said master sheet after separating such from said electrolytically deposited sheet.

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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)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
US33158A 1966-05-12 1970-05-05 Method of detaching galvanically produced sheets from master sheets Expired - Lifetime US3693236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN0028517 1966-05-12

Publications (1)

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US3693236A true US3693236A (en) 1972-09-26

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US33158A Expired - Lifetime US3693236A (en) 1966-05-12 1970-05-05 Method of detaching galvanically produced sheets from master sheets

Country Status (5)

Country Link
US (1) US3693236A (enrdf_load_stackoverflow)
BE (1) BE698383A (enrdf_load_stackoverflow)
FI (1) FI47910C (enrdf_load_stackoverflow)
GB (1) GB1133911A (enrdf_load_stackoverflow)
SE (1) SE315456B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2405931A1 (de) * 1973-02-08 1974-08-15 Olov Carl Gustav Wennberg Vorrichtung zum entfernen von abscheidungen auf den raendern einer platte
US4027378A (en) * 1973-02-08 1977-06-07 Olov Carl Gustav Wennberg Removing deposited material from the edge portions of a plate
US4432839A (en) * 1981-06-18 1984-02-21 Diamond Shamrock Corporation Method for making metallided foils
US4840710A (en) * 1986-11-04 1989-06-20 M.I.M. Technology Marketing Limited Method of stripping electrolytically deposited copper from a cathode
US20070125401A1 (en) * 2003-12-01 2007-06-07 Peter Nord Equipment and method for removing deposits created in electrolytic refining

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US169878A (en) * 1875-11-09 Improvement in manufacture of metal tubing
US1580198A (en) * 1925-05-21 1926-04-13 Harrison Herbert Champion Process of producing coated or other thin metallic sheets
US2583100A (en) * 1947-03-25 1952-01-22 Union Carbide & Carbon Corp Treatment of a metallic cathode to receive electrodeposited metal
US2880147A (en) * 1956-02-13 1959-03-31 Horizons Inc Electrolytic process
US3046203A (en) * 1959-11-20 1962-07-24 Anaconda Co Method of making copper cathode starting sheets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US169878A (en) * 1875-11-09 Improvement in manufacture of metal tubing
US1580198A (en) * 1925-05-21 1926-04-13 Harrison Herbert Champion Process of producing coated or other thin metallic sheets
US2583100A (en) * 1947-03-25 1952-01-22 Union Carbide & Carbon Corp Treatment of a metallic cathode to receive electrodeposited metal
US2880147A (en) * 1956-02-13 1959-03-31 Horizons Inc Electrolytic process
US3046203A (en) * 1959-11-20 1962-07-24 Anaconda Co Method of making copper cathode starting sheets

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2405931A1 (de) * 1973-02-08 1974-08-15 Olov Carl Gustav Wennberg Vorrichtung zum entfernen von abscheidungen auf den raendern einer platte
US4027378A (en) * 1973-02-08 1977-06-07 Olov Carl Gustav Wennberg Removing deposited material from the edge portions of a plate
US4432839A (en) * 1981-06-18 1984-02-21 Diamond Shamrock Corporation Method for making metallided foils
US4840710A (en) * 1986-11-04 1989-06-20 M.I.M. Technology Marketing Limited Method of stripping electrolytically deposited copper from a cathode
US20070125401A1 (en) * 2003-12-01 2007-06-07 Peter Nord Equipment and method for removing deposits created in electrolytic refining
AU2004295497B2 (en) * 2003-12-01 2009-09-03 Outotec Oyj Equipment and method for removing deposits created in electrolytic refining
US8696817B2 (en) * 2003-12-01 2014-04-15 Outotec Oyj Equipment and method for removing deposits created in electrolytic refining

Also Published As

Publication number Publication date
FI47910B (enrdf_load_stackoverflow) 1974-01-02
BE698383A (enrdf_load_stackoverflow) 1967-10-16
FI47910C (fi) 1974-04-10
GB1133911A (en) 1968-11-20
SE315456B (enrdf_load_stackoverflow) 1969-09-29

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