US3650524A - Apparatus for and method of opening interpositioned folded sheets - Google Patents

Apparatus for and method of opening interpositioned folded sheets Download PDF

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Publication number
US3650524A
US3650524A US882599A US3650524DA US3650524A US 3650524 A US3650524 A US 3650524A US 882599 A US882599 A US 882599A US 3650524D A US3650524D A US 3650524DA US 3650524 A US3650524 A US 3650524A
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United States
Prior art keywords
sheets
leaves
sheet
spread
fold
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
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US882599A
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English (en)
Inventor
Rudolf Hepp
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42B—PERMANENTLY ATTACHING TOGETHER SHEETS, QUIRES OR SIGNATURES OR PERMANENTLY ATTACHING OBJECTS THERETO
    • B42B2/00—Permanently attaching together sheets, quires or signatures by stitching with filamentary material, e.g. textile threads
    • B42B2/02—Machines for stitching with thread
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/45—Folding, unfolding
    • B65H2301/453—Folding, unfolding opening folded material
    • B65H2301/4531—Folding, unfolding opening folded material by opposite opening drums

Definitions

  • the sheets are usually printed individually in printing presses and then folded in folding machines to the required size and the required number of pages.
  • the folding methods may differ.
  • a folding machine may process two sheets, positioning one in the other defining an aligned or common crease. Additional sheets may be fixed by gluing to the folded edge of the outer sheets of the two interpositioned sheets.
  • these sheets For further processing by a thread book sewing machine, these sheets must be opened in the center along the crease and placed on a transport device such as an inverted V-shape saddle which carries the opened sheets to the thread book sewing machine where they are secured with other sheets by sewing to form the book block.
  • a transport device such as an inverted V-shape saddle which carries the opened sheets to the thread book sewing machine where they are secured with other sheets by sewing to form the book block.
  • the invention has the object of providing a method and a device whereby it is possible to accomplish the reliable opening of two interpositioned sheets in the center without additional transport paths even where additional sheets are mounted on one side of the folding edge of the outer sheet by gluing.
  • this object is realized by a method characterized in that first the outer parts of the sheet are spread off the inner parts of the sheet and then the inner parts of the sheet are spread apart whilst maintaining the spreading of the outer parts of the sheet.
  • additional sheets mounted one-sidedly on the folding edge of the outer sheet by gluing, only the parts of the sheets of the interpositioned sheets opposite the additional sheet or sheets are spread apart.
  • the device for carrying out the method is characterized in that the spreading device serving for opening the parts of the sheets has two superimposed pairs of gripping members, of which the upper pair consists of gripping members gripping the outer sheetportions and mounted at their free ends on vertically moved arms, and the lower pair consists of known rotation gripping members, wherein the pivoting rhythm of the upper pair is controlled as a function of the speed of the lower pair.
  • the gripping members are suction elements, known per se and acting on the outside of the associated sheet portion, and arranged outside the roller conveyors, wherein the upper pair of grippers is positioned in the gripping position preferably at a level corresponding substantially to the center of the roller conveyor.
  • the device is characterized in that one gripping element of the lower pair of gripping elements carries a cam disk serving to control the pivoting movement of the upper pair of gripping elements; one :side of the cam disk has mounted thereon a control lever carrying on one end a toothed segment engaging into a gear mounted coaxially at the pivoting center of the superimposed gripping element of the upper pair of gripping elements and wherein the gripping elements of the upper pair have arms mounted coaxially at the pivoting center and interconnected by a linkage. It is also important that the rotating gripping elements of the lower pair have each an abutting surface adapted to receive the edges of the sheet portions stripped off by the upper pair.
  • FIG. I shows diagrammatically two interpositioned folded sheets
  • FIG. 2 is a representation corresponding to FIG. 1 with a further folded sheet mounted by gluing on one side of the outer folded sheet;
  • FIG. 3 is a diagrammatical view of the device according to the invention in side elevation
  • FIGS. 4 to 8 are front elevations of the device according to FIG. 3 in different operating positions and;
  • FIGS. 9 and 10 show the device according to FIG. 7 when processing a sheet according to FIG. 2.
  • FIG. 1 shows two folded interpositioned sheets 1;
  • FIG. 2 shows also two folded interpositioned sheets 1 wherein a further folded sheet 2 is fixed by gluing to the folding edge on one side ofthe outer folded sheet 1.
  • sheets according to FIGS. 1 and 2 are continuously advanced downwardly with their edges parallel to the folding edge facing forward by driven roller conveyors 3 pressing against the sheet surface.
  • the spreading device is arranged to operate near a transverse edge 4 of the :sheet 1, 2.
  • the device consists of a pair of upper gripping elements 5 constructed as suction elements and a pair of lower rotating suction grippers 6 secured to rotatable, horizontal, parallel shafts.
  • the suction grippers of the present invention may be known convex rubber suction cups which are pressed against a flat surface to evacuate air in the convex cavity and release when air escapes into the cavity. It should be appreciated however that a part communicating with a vacuum pump could also serve to provide suction.
  • the grippers 5 of the upper pair are mounted on arms 7 pivotable at their free ends about horizontal, parallel shafts 8 in the direction of delivery.
  • cranks 9 are secured to shafts 8; the cranks are interconnected by a linkage l0.
  • gear 11 Spaced from the cranks on the shaft of the left gripper 5 is gear 11 which meshes with a gear segment 12.
  • the segment is mounted on pivotal arm 13 which carries a running roller 14 at its end.
  • the shaft on which left suction gripper 6 is mounted is provided with a cam disk 15 whose control face is engaged by roller 14.
  • the control face of the cam disk 15 includes the radially recessed portion 16 which controls the motion of pivot of arm 13.
  • the suction grippers 5 of the upper pair are in the gripping position when the roller 14 is located on the recessed part 16 of the cam disk 15.
  • the suction grippers 6 of the lower pair are mounted on arms 17 secured to the driven rotatable shaft, each equipped with a beveled surface 18 adapted to engage the outer sheet portions spread by grippers 5 to permit the grippers 6 to have access to the internal sheets, illustrated in FIGS. 6 and 7.
  • a beveled surface 18 adapted to engage the outer sheet portions spread by grippers 5 to permit the grippers 6 to have access to the internal sheets, illustrated in FIGS. 6 and 7.
  • the sheet portions of the inner sheet 1 reach the zone of the lower pair of suction grippers 6, they are spread apart, as shown in FIG. 6, while the spreading of the outer sheet portions is maintained by the surfaces 18.
  • the interpositioned folded sheets 1 are deposited after central opening on the inverted V-saddle 19 of the conveyor leading to the thread book sewing machine.
  • the upper and lower pair of grippers are mounted on a common mounting frame 20. It should be appreciated that the rotation of drive rollers 3 is in timed relation to the driven shafts of arms 17 so that the spreading operation is consistent with the linear movement of the folded sheets.
  • FIGS. 9 and the object is to open a sheet according to FIG. 2.
  • the additional sheets fixed by gluing are arranged on the right side, in FIG. 10 on the left side.
  • the two left-hand sheet portions of the interpositioned sheets 1 must be spread while a spreading of the righthand sheet portions cannot be effected in the device.
  • FIG. 10 the position is reversed.
  • a pivotable tongue 21 is provided which is located immediately above the saddle l9 and ensures by its correct positioning that the unspread sheet portions are so deflected that they position themselves correctly above the saddle 19.
  • the tongue 21 must be so arranged that it enters into the path of travel of the sheets 2 in such a manner that it does not prevent them from being deposited on the saddle 19.
  • the operation of the device according to the invention is as follows.
  • the two interpositioned folded sheets 1 are moved in a downward direction by the roller conveyor 3.
  • the upper pair of grippers acts at the level of the center of the roller conveyor 3 and spreads during its downward pivoting movement the outer sheet portions as shown in FIG. 5.
  • the edges of these outer sheet portions are deposited on abutment faces 18 so that during the further downward movement of the roller conveyor 3, the outer sheet portions are held in their spread apart position.
  • the suction elements 6 of the lower pair act on the edge zones and the inner sheet portions 1, causing them to be spread apart under rotation whilst the edges of the outer sheet portions 1 are retained in the spread apart position on the surfaces 18, as shown in FIG. 7.
  • the two interpositioned folded sheets, opened in the center in this manner are then deposited, as shown in FIG. 8 on the saddle 19 of the conveyor leading to the thread book sewing machine so that they can be sewn in this machine along the folding edges.
  • FIG. 9 and FIG. 10 only the left-hand, and right-hand suction elements 5, 6 respectively are supplied with suction air so that only the left-hand and right-hand sheet portions of the two interpositioned sheets are spread, whilst the other sheet portions are not spread apart; this is achieved in that the righthand (FIG. 9) or the left-hand (FIG. 10) suction elements 5, 6 are not supplied with suction air.
  • the unspread sheet portions are deflected by the tongue 21 so that also the sheets of FIG. 2 undergo a reliable central spreading.
  • a method of centrally opening two folded sheets positioned one within another comprising the steps of displacing said sheets in a direction perpendicular to the fold with the fold rearmost and free edges of the sheet foremost; gripping outer surfaces of leaves of the outermost sheet and deflecting same outwardly while continuing the advance of said sheets;
  • each of said suction means includes a respective suction device engageable with the outer surface of a respective leaf and means operatively connecting said devices for rotatable movement in opposite senses.
  • said means for advancing said sheets includes a pair of rollers disposed on opposite sides of said sheets for engaging same ahead of said first suction means.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US882599A 1968-12-23 1969-12-05 Apparatus for and method of opening interpositioned folded sheets Expired - Lifetime US3650524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681817648 DE1817648A1 (de) 1968-12-23 1968-12-23 Verfahren zur mittigen OEffnung von zwei ineinandersteckenden gefalzten Bogen und Vorrichtung zu seiner Durchfuehrung

Publications (1)

Publication Number Publication Date
US3650524A true US3650524A (en) 1972-03-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US882599A Expired - Lifetime US3650524A (en) 1968-12-23 1969-12-05 Apparatus for and method of opening interpositioned folded sheets

Country Status (3)

Country Link
US (1) US3650524A (de)
CH (1) CH508483A (de)
DE (1) DE1817648A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135708A (en) * 1976-05-21 1979-01-23 Faltin Hans G High speed insert handling mechanism and method
US4497479A (en) * 1981-07-03 1985-02-05 Giorgio Pessina Device for symmetrically opening signatures made up of several sheets and arranging them onto a transport saddle
US4775137A (en) * 1985-02-07 1988-10-04 Grapha-Holding Ag Apparatus for gathering square folded sheets in bookbinding machines
US5248135A (en) * 1991-07-11 1993-09-28 Ferag Ag Method of, and apparatus for, opening flexible products folded off-center
US5462266A (en) * 1992-12-04 1995-10-31 Ferag Ag Process and apparatus for opening folded printed products
US5474285A (en) * 1993-10-08 1995-12-12 Ferag Ag Apparatus for opening and further transporting printed products

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236706A (en) * 1979-04-18 1980-12-02 Harris Corporation Signature conveyor for use with inserter and stitcher

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1202809A (en) * 1914-05-27 1916-10-31 American Assembling Machine Company Signature-insetting machine.
US1294559A (en) * 1917-10-24 1919-02-18 Kast Insetting And Gathering Machine Co Signature-handling device.
GB396816A (en) * 1932-02-17 1933-08-17 Brehmer Geb A method of and mechanism for automatically opening closed book signatures and the like
US2390901A (en) * 1944-03-13 1945-12-11 Smyth Mfg Co Book signature feeding method
US2817513A (en) * 1954-06-29 1957-12-24 Kenneth T Moser Sheet separating means for collating machine
US2966354A (en) * 1958-08-07 1960-12-27 Miehle Goss Dexter Inc Signature handling apparatus
US3169762A (en) * 1963-03-07 1965-02-16 Time Inc Magazine making apparatus
US3176976A (en) * 1962-12-17 1965-04-06 Hepp Rudolf Method and apparatus for spreading folded leaves of a signature

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1202809A (en) * 1914-05-27 1916-10-31 American Assembling Machine Company Signature-insetting machine.
US1294559A (en) * 1917-10-24 1919-02-18 Kast Insetting And Gathering Machine Co Signature-handling device.
GB396816A (en) * 1932-02-17 1933-08-17 Brehmer Geb A method of and mechanism for automatically opening closed book signatures and the like
US2390901A (en) * 1944-03-13 1945-12-11 Smyth Mfg Co Book signature feeding method
US2817513A (en) * 1954-06-29 1957-12-24 Kenneth T Moser Sheet separating means for collating machine
US2966354A (en) * 1958-08-07 1960-12-27 Miehle Goss Dexter Inc Signature handling apparatus
US3176976A (en) * 1962-12-17 1965-04-06 Hepp Rudolf Method and apparatus for spreading folded leaves of a signature
US3169762A (en) * 1963-03-07 1965-02-16 Time Inc Magazine making apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135708A (en) * 1976-05-21 1979-01-23 Faltin Hans G High speed insert handling mechanism and method
US4497479A (en) * 1981-07-03 1985-02-05 Giorgio Pessina Device for symmetrically opening signatures made up of several sheets and arranging them onto a transport saddle
US4775137A (en) * 1985-02-07 1988-10-04 Grapha-Holding Ag Apparatus for gathering square folded sheets in bookbinding machines
US5248135A (en) * 1991-07-11 1993-09-28 Ferag Ag Method of, and apparatus for, opening flexible products folded off-center
US5462266A (en) * 1992-12-04 1995-10-31 Ferag Ag Process and apparatus for opening folded printed products
US5474285A (en) * 1993-10-08 1995-12-12 Ferag Ag Apparatus for opening and further transporting printed products

Also Published As

Publication number Publication date
CH508483A (de) 1971-06-15
DE1817648A1 (de) 1970-07-16

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