Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G59/00—De-stacking of articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H3/00—Separating articles from piles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H3/00—Separating articles from piles
  • B65H3/32—Separating articles from piles by elements, e.g. fingers, plates, rollers, inserted or traversed between articles to be separated and remainder of the pile

Definitions

• a very large number of objects handled in industry and in trade have a flat shape, as, for example, paper, cardboard, pasteboard, textile fabric, felt, or synthetic plastic sheets; sheet metal or panels of wood, plywood, synthetic plastic, or corrugated board; as well as various articles comprised of individual sheets folded 0r sewn or otherwise bound together.
• the list is exemplary, and hardly exhaustive.
• the object of the invention is a method for separating stacks of the aforesaid kind, which method very greatly reduces the disadvantages, and entirely avoids certain of the difiiculties, set forth above.
• the invention is based upon the fact that there is always a certain static friction between neighboring flat objects of a series of such articles that are at least partly lying one on top of the other.
• means are provided, either before or at the time that the stack is formed for reducing the static friction between adjacent flat objects of the stack at the one or more places it is desired to separate the stack.
• the object of the first embodiment is to reduce a stack of panels (sheet metal, plywood, cardboard, or synthetic plastic, for example) of equal size, by removing, for instance, four panels each time from the stack.
• a stack of panels sheet metal, plywood, cardboard, or synthetic plastic, for example
• one surface of every fourth panel is provided with a low-friction coating in the form of a fluid or dry lubricant which is harmless to the material of the panel.
• the surface is made smooth, provided that this is compatible with the later use of the panel.
• a very low-friction sheet such as oil paper or a sheet of synthetic plastic, can be inserted between every fourth panel when the stack is formed.
• the positions of the coating, the polished surface, or of the low-friction sheet are not visible in the stack. These positions will henceforth be termed low-friction positions.
• the four uppermost panels will move, rather than only the top panel, because the static friction between adjacent panels of this group of four panels is far greater than that between the fourth and fifth panels. Moreover, the stack will not separate at the next lower low-friction position, because the static friction, in consequence of the four additional panels, is greater here than at the first low-friction position. As soon as the first four panels have thus been shifted, the exposed surface can be engaged by conventional transport equipment and the group of four panels removed. The next four panels are now ready for removal.
• the object of the second embodiment is to open at a predetermined page or place each of a plurality of copies of printed matter, such as periodicals.
• Each copy is formed of a stack of sheets by folding or by stapling, sewing, or gluing along one edge. At least one of the two surfaces, between which the desired place is located, is sprayed with a low-friction material, such as a dry lubricant. In the case of newspapers, talcum powder is a suitable lubricant.
• the sheets of the copy located between the side to which the force is applied and the said desired place are consequently drawn back and raised, whereby a surface is exposed to enable operation of the mechanism which is necessary for further opening the copy.
• the force can be applied, for instance, by causing the group of sheets located on one side of the desired place to move against an abutment which engages an unbound or unfolded edge of the outermost sheets of the group, while continuing to advance the copy a predetermined distance.
• the group of sheets will behave as a unit.
• the object of the third embodiment is to remove a desired number of sheets each time sheets at a time, for example) from a stack of normal-sized sheets of writing paper that have been blanked from a stack of the larger sheets as produced by the paper manufacturer.
• a very low friction sheet such as a supercalendered paper of the greatest smoothness, is inserted between every hundred of the larger sheets as they are stacked.
• Sixteen normalsized sheets may be cut from a single one of the larger sheets, for example. After the stack of larger sheets is blanked in a single operation, and the blanked sheets stacked, the resultingstack of sheets is sixteen time as high as the original stack.
• the means chosen to reduce the friction depends on the kind of fiat articles stacked and on their properties. It lies within the purview of the invention for the professional to choose the necessary and desirable means, as well as the manner of applying the force. In this connection, if the force is applied at an acute angle, rather than approximately parallel, to the sheet surface, the component normal to "the sheet surface has the effect of temporarily changing the force of static friction between the sheet surfaces. In certain instances this can be advantageous.
• the first step includes reducing the static friction between at least a part of the area common to the said two opposed surfaces.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pile Receivers (AREA)
• Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
• Forming Counted Batches (AREA)
• Sheets, Magazines, And Separation Thereof (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=3615279

Family Applications (1)

Country Status (11)

Families Citing this family (3)

Citations (2)

• 1965
  • 1965-10-21 AT AT956565A patent/AT255974B/de active
• 1966
  • 1966-09-29 CH CH1404366A patent/CH440339A/de unknown
  • 1966-09-29 DE DE19661511593 patent/DE1511593A1/de not_active Withdrawn
  • 1966-10-04 GB GB44218/66A patent/GB1150917A/en not_active Expired
  • 1966-10-13 US US586376A patent/US3392856A/en not_active Expired - Lifetime
  • 1966-10-14 FI FI662710A patent/FI45941C/fi active
  • 1966-10-19 SE SE14246/66A patent/SE328309B/xx unknown
  • 1966-10-20 NL NL666614840A patent/NL153499B/xx unknown
  • 1966-10-21 DK DK551066AA patent/DK119041B/da unknown
  • 1966-10-21 BE BE688720D patent/BE688720A/xx unknown
  • 1966-10-21 NO NO165286A patent/NO118030B/no unknown

Patent Citations (2)

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