US3886778A - Apparatus for the roller stamping of thin sheets, especially starting sheets for electrolytic production of copper - Google Patents

Apparatus for the roller stamping of thin sheets, especially starting sheets for electrolytic production of copper Download PDF

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Publication number
US3886778A
US3886778A US370622A US37062273A US3886778A US 3886778 A US3886778 A US 3886778A US 370622 A US370622 A US 370622A US 37062273 A US37062273 A US 37062273A US 3886778 A US3886778 A US 3886778A
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Prior art keywords
rollers
roller
bands
stamping
portions
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Expired - Lifetime
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US370622A
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English (en)
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Olov Carl Gustav Wennberg
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/0047—Machines or apparatus for embossing decorations or marks, e.g. embossing coins by rolling

Definitions

  • FIG.1 A first figure.
  • Electrolytic refining of, for example. copper is done in cells, in which raw copper is dissolved in the electro lyte and pure copper is precipitated on the cathode unit, the major portion of which consists of a thin sheet of pure copper.
  • Such thin sheets usually 1 mm thick, constitute the active portion of so-called starting sheets for the electrolytic refining.
  • Starting sheets usually have a relatively large surface area, 1 m relative to the thickness and are therefore fragile and must be handled with great care. so that they do not buckle or bend in such a way as to become unusable in the electrolytic cells.
  • the present invention relates to a device, which makes it possible to work starting sheets so that they have an increased rigidity and are not so fragile.
  • the device can be used not only for starting sheets but also for other thin sheets which need to be made more rigid so that they can be handled Without losing their generally plane form.
  • the present invention avoids these disadvantages with a device which is characterized in that the stamping is done by stamping rollers, one or more endless bands being disposed for feeding in of the sheet between the stamping rollers when the sheet is to be stamped.
  • the apparatus can itself carry out the advancing of the sheets thereby significantly facilitating the process.
  • the endless bands can themselves effect the advancing, but it can also be done by the stamping rollers and the bands working in conjunction. It is possible to let the endless band extend merely over one of two stamping rollers disposed to work in conjunction with one another, but one can instead use two endless bands which run over individual stamping rollers, designed to work in conjunction, the stamping being done by means of the bands.
  • the width of the endless band can be essentially equal to the effective length of a stamping roller and the bands and rollers can be so disposed that the sheet is advanced and stamped in contact with the band on one side and with an opposing stamping roller on the other.
  • FIG. I shows the apparatus viewed from above
  • FIG. 2 is a vertical projection, viewed from below in FIG. 1
  • FIG. 3 is a vertical cross section along the line 3--3 in FIG. 2
  • FIG. 4 is a view which reveals on a larger scale how the rollers and bands work in conjunction with each other.
  • FIG. 5 shows how a sheet being handled in the apparatus can look when viewed from its front edge when being advanced
  • FIG. 6 is a corresponding plane view.
  • the apparatus shown in the drawing comprises a frame, consisting of a pair of frame posts 10 and 12 and upper and lower horizontal journalling beams 14, 16 and 18, 20 respectively extending between said frame posts and intermediate beams 22,24. Said intermediate beams 22,24 are also disposed in pairs on top of one another.
  • the journalling beams 14,16 and 18,20 carry end bearings for a number of parallel rollers, namely three pairs of stamping rollers 26,28; 30,32 and 34,36, five alignment rollers, specifically three lower alignment rollers 38 and two upper 40, the latter being placed next to the space between the three lower rollers 38.
  • a pair of feedin rollers 42,44 of the same size and shape as the stamping rollers but disposed at a somewhat greater distance from one another than the stamping rollers.
  • All of the rollers except for the alignment rollers are placed in pairs but with one of the rollers in the pair according to the drawing placed above the other, so that one can imagine an upper and lower row of rollers, in which the upper row contains the feed-in roller 42 and the stamping rollers 26,30 and 34 and the lower row contains the feed-in roller 44 and the stamping rollers 28,32 and 36; cf. FIG. 3.
  • a number of endless subbands 46 run over the rollers in the upper row and a number of endless sub-bands 48 run over the rollers of the lower row. They are called sub-bands in this connection because each band group 46 and 48 can be replaced by a single band, whose width is equal to the entire effective length of the stamping roller.
  • Each stamping roller in a pair 26,28; 30,32; 34,36 is constructed with parts 52,54 with different diameters, so that there are two groups of roller members 52 with equal diameters within each group but with different diameters between the groups.
  • the sub-bands 46,48 run over these roller members which have the smallest diameter.
  • the outermost rollers 42,34 and 44,36 respectively serve as turning rollers for the different sub-bands 46 and 48 respectively.
  • the thicker roller member 42 on a stamping roller lies next to a smaller member 54 on the other stamping roller in the pair and the plate during stamping will therefore lie with one ofits sides against a sub-band on the narrower roller member and the thicker member. free from the band. on the opposing stamping roller.
  • All of the lower stamping rollers 28,32,36 are driven from a drive motor 60 over chain or belt driven devices 62 (indicated schematically while the upper stamping rollers 26,30,34 are driven from axles of the lower stamping rollers over gears or the like.
  • a sheet which is to be aligned and stamped is shown with its front portion 66 to the left in FIG. 3 and is introduced between those portions of the endless bands 46,48 which run over the feedin rollers 42,44.
  • the sheet is caught here by the portions of the endless bands which face one another and is advanced by them first between the alignment rollers 38,40 where any strains are removed and it is made level, and then between the subsequent pairs of stamping rollers 26,28; 30,32 and 34,36 respectively. From the stamping rollers the sheet obtains successive elevations 68 and depressions 70 as well as intermediate bevellings 72 as shown in FIGS. 5 and 6.
  • the pattern thus obtained is easy to achieve, other stamping patterns can be obtained simply by changing the shape of the stamping rollers.
  • the bands should be made of non-rigid material, e.g. rubber, since one of their main tasks is to compensate, during the advancing of the thin sheets, for variations in thickness and uneveness in the surface of the plates. so that the advancement is even, among other things. i.e. the front and rear edges of the sheet are moved parallel without side movement during advancement.
  • the starting sheet of the type intended here normally has a thickness of 0.7-1.0 mm but that variations can occur be- Lil LII
  • Apparatus for corrugating thin sheets comprising a pair of opposed contoured rollers each of which has a plurality of cylindrical portions thereon of alternately large and small diameter that register with respective portions of alternately small and large diameter on the other said roller, a plurality of endless bands passing about said rollers, alternate bands passing about said small portions of one said roller, the remaining bands passing about said small portions of the other said roller, said bands having a length substantially greater than the periphery of said rollers and a width about equal to the axial length of the said small portions about which they pass, and further rollers having axes parallel to said stamping rollers and about which the remaining portions of said bands are trained.
  • Apparatus as claimed in claim 1 there being a plurality of said rollers in the direction of movement of a said sheet, whereby a first said roller effects a portion of the corrugation of the sheet and a further said roller continues the corrugation of the sheet.

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  • Press Drives And Press Lines (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Credit Cards Or The Like (AREA)
US370622A 1972-06-19 1973-06-18 Apparatus for the roller stamping of thin sheets, especially starting sheets for electrolytic production of copper Expired - Lifetime US3886778A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE805672 1972-06-19

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US3886778A true US3886778A (en) 1975-06-03

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US370622A Expired - Lifetime US3886778A (en) 1972-06-19 1973-06-18 Apparatus for the roller stamping of thin sheets, especially starting sheets for electrolytic production of copper

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US (1) US3886778A (fr)
JP (1) JPS4952121A (fr)
DE (1) DE2331232A1 (fr)
GB (1) GB1432468A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5961797A (en) * 1996-05-03 1999-10-05 Asarco Incorporated Copper cathode starting sheets

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US815710A (en) * 1905-07-27 1906-03-20 Godfrey Benington Johnson Corrugating-machine.
US2266418A (en) * 1937-08-09 1941-12-16 Martin E Evans Metalworking apparatus
US2506182A (en) * 1947-02-03 1950-05-02 Rene H Toubhans Fabric folding machine
US2605810A (en) * 1950-04-27 1952-08-05 Clarence A Richardson Machine for longitudinally corrugating long metal sheets
US2708958A (en) * 1949-11-15 1955-05-24 Robertson Co H H Method of and apparatus for making a steel floor
US2987988A (en) * 1958-01-27 1961-06-13 Robledano Pablo Continuous wire conveyor and roller extractor
US3559438A (en) * 1967-07-31 1971-02-02 Nord Aviat Soc National De Con Method of planing thin metallic strips and corresponding planing device
US3680342A (en) * 1970-01-26 1972-08-01 Fluor Ocean Services Apparatus for laying pipelines

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US815710A (en) * 1905-07-27 1906-03-20 Godfrey Benington Johnson Corrugating-machine.
US2266418A (en) * 1937-08-09 1941-12-16 Martin E Evans Metalworking apparatus
US2506182A (en) * 1947-02-03 1950-05-02 Rene H Toubhans Fabric folding machine
US2708958A (en) * 1949-11-15 1955-05-24 Robertson Co H H Method of and apparatus for making a steel floor
US2605810A (en) * 1950-04-27 1952-08-05 Clarence A Richardson Machine for longitudinally corrugating long metal sheets
US2987988A (en) * 1958-01-27 1961-06-13 Robledano Pablo Continuous wire conveyor and roller extractor
US3559438A (en) * 1967-07-31 1971-02-02 Nord Aviat Soc National De Con Method of planing thin metallic strips and corresponding planing device
US3680342A (en) * 1970-01-26 1972-08-01 Fluor Ocean Services Apparatus for laying pipelines

Also Published As

Publication number Publication date
GB1432468A (en) 1976-04-14
JPS4952121A (fr) 1974-05-21
DE2331232A1 (de) 1974-01-17

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