US3570841A - Apparatus for grooving and folding sheet material - Google Patents

Apparatus for grooving and folding sheet material Download PDF

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Publication number
US3570841A
US3570841A US796066A US3570841DA US3570841A US 3570841 A US3570841 A US 3570841A US 796066 A US796066 A US 796066A US 3570841D A US3570841D A US 3570841DA US 3570841 A US3570841 A US 3570841A
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US
United States
Prior art keywords
grooving
rollers
transverse
longitudinal
paper
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
US796066A
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English (en)
Inventor
Friedrich Rettig
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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
Priority claimed from DE19681611375 external-priority patent/DE1611375B2/de
Application filed by Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Application granted granted Critical
Publication of US3570841A publication Critical patent/US3570841A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/30—Folding in combination with creasing, smoothing or application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines

Definitions

  • This invention relates to an apparatus for grooving and folding sheet material, preferably paper sheets, by means of alternately engaging grooving bars and grooving recesses on two rollers rotating in opposite directions.
  • a known apparatus of this type is used for grooving and folding continuously conveyed endless paper webs.
  • the known apparatus provides the paper web with transverse grooves about which the paper is folded in a zigzag form for the purpose of stacking.
  • the grooving apparatus includes two rollers rotating in opposite directions and each having at least one concentric transverse grooving bar and one concentric transverse grooving recess at the same angular distance from each other.
  • the grooving bars and recesses are so oriented to one another on both rollers that, during one revolution of each roller, the paper web is provided with at least two grooves which alternately project upwardly and downwardly.
  • auxiliary devices For satisfactorily folding the endless paper web, special auxiliary devices are provided.
  • a known auxiliary device which, after grooving and during further revolution of the rollers, still holds the paper in the recess for a certain time, the paper can be deposited, when the web is guided in a vertically downward direction, in an open rectangular container below the rollers, with the formation of zigzag folds.
  • the axes of rotation of the rollers are mounted parallel side-by-side in a horizontal plane. It is also known to mount the axes of rotation of the rollers one above the other and to pass the paper web to the rollers in a horizontal direction. In this case, the paper is passed behind the rollers in a horizontal guiding device. In the guiding device, the folds are formed, which lean against retarding plates, and, in the compressed state, move away from the rollers.
  • the present invention provides an apparatus for grooving and folding individual sheets discontinnously conveyed to the apparatus, which sheets are to be provided with longitudinal and transverse grooved lines running perpendicularly to one another, whereupon each sheet is to be folded in a zigzag form along the grooved lines running parallel to one another.
  • longitudinal grooving bars and longitudinal grooving recesses which are perpendicularly intersected on the same rollers by at least one transverse grooving bar and at least one transverse grooving recess.
  • the apparatus includes a receptacle for zigzag-folding and collecting the folded sheets.
  • an advantageous modification of the invention provides that the distance of the rollers from each other in a small area at one end thereof, advantageously at the drive end, is smaller than the thickness of the paper to be processed and, in the other areas, approximately corresponds to the paper thickness. Further, the distances of the ends of the longitudinal grooving bars, leaving the original position of the rollers and first impinging upon the paper, from the transverse grooving recesses or transverse grooving bars increase from the small distance area towards the other end of the rollers.
  • the distance of the first longitudinal grooving bar from the transverse grooving recess may be zero with the distances of the ends of the following longitudinal grooving bars increasing.
  • the invention provides advantageous shapes of the bars and recesses, which advantageously have triangular crosssections and engage one another without contact. This characteristic of the invention results in gentle treatment of the paper.
  • the invention provides that the axes of the rollers are mounted one above the other, preferably vertically one above the other, that a horizontal table for feeding the paper and having a vertical holding bar extending normal to the roller axes at the end of the smaller roller distance is mounted in front of the rollers, and the receptacle is mounted behind the rollers.
  • the receptacle which represents a part of the apparatus according to the invention has a simple construction.
  • the receptacle is a trough open at the top and at the front sides and extending parallel to the rollers, the bottom of which trough is slightly below the deepest point of the lower roller, its side wall adjacent the rollers ends slightly below the axis of rotation of the lower roller, its opposite side Wall ends above the gap of both rollers, and its width is somewhat greater than the distance of the transverse grooves.
  • FIG. 1 is a rear view in elevation of the apparatus without the receptacle
  • FIG. '2 is a sectional view of the apparatus taken along the line II of FIG. 1 showing the receptacle behind the apparatus and the sheet feeding device in front of the apparatus,
  • FIG. 3 is a similar sectional view of the apparatus as in FIG. 2, but showing the rollers in their initial positions, and
  • FIG. 4 shows a sheet folded by means of the transverse and longitudinal grooves.
  • rollers 4 and 5 are rotatably mounted about two parallel axes 2 and 3 mounted one above the other.
  • the lower axis directly driven by means of the crank 6, causes rotation of the upper axis and thus of the upper roller through the gear wheels 7. Due to the action of the gear-wheel transmission, both rollers rotate oppositely to one another in the directions indicated by the arrows in FIGS. 2 and 3.
  • the bars 8, 9, and 10 to 15 project from the surfaces.
  • the bars engage recesses 16, 17 and 19 to 24 which are incorporated in the opposite surfaces.
  • the bars and recesses have triangular cross-sections, which have proved advantageous and gentle for use with paper, particularly for photoprinting paper. It is furthermore advantageous for the bars not to completely engage the recesses, i.e. contact-free engagement occurs between the bars and the recesses, which can be observed very distinctly in FIGS. 1 and 3 in that one can look through the engagement points between the bars and the recesses.
  • the bars and recesses may have cross-sections other than triangular, in which case contact-free engagement of bars and recesses may be partially or entirely dispensed with.
  • Each of the two rollers has a conventional transverse grooving bar and a transverse grooving recess.
  • the rollers additionally are provided with longitudinal grooving bars and longitudinal grooving recesses, which perpendicularly intersect the transverse grooving bars and transverse grooving recesses.
  • the upper roller 4 has a transverse grooving bar 8 and a transverse grooving recess 16. The bar and the recess are positioned with respect to one another at a distance of 180.
  • the upper roller also has longitudinal grooving bars 10, 11, and 12 and longitudinal grooving recesses 19, 20, and 21. Each longitudinal grooving bar and longitudinal recess extends over only half of the periphery of the roller, i.e.
  • transverse grooving bar alternates with a longitudinal grooving recess.
  • transverse grooving bar is indicated by the numeral 9 and the transverse grooving recess by numeral 17.
  • the lower roller has three longitudinal grooving bars 13, 14, and 15, and three longitudinal grooving recesses 22, 23, and 24.
  • Each grooving bar on the upper roller forms an engaging pair with a grooving recess of the lower roller, and vice versa.
  • the upper and lower rollers are connected to one another as is shown in FIGS. 1 to 3.
  • the transverse grooving bar 8 of the upper roller engages the transverse grooving recess 17 of the lower roller.
  • a paper sheet 25, conveyed on a horizontal table 26, is pushed between the rollers.
  • a holding bar 27 projecting at the drive end vertically upward from the horizontal table and extending normal to the roller axes serves as the side guiding means for the paper sheet.
  • Each paper sheet is so placed into the apparatus that, after half a revolution of the crank 6 or of each roller 4 and 5, the first transverse groove is pressed into the paper in an upward direction by pressing the transverse grooving bar 9 into the transverse grooving recess 16.
  • the paper sheet is not gripped by the rollers over its entire width.
  • there is a free space between the rollers which approximately corresponds to the thickness of the paper to be processed.
  • the free space extends as a longitudinal gap 28 between the rollers to a point adjacent the drive end.
  • the distance of the rollers from each other is less than the thickness of the paper to be processed.
  • the paper is gripped between the areas of greater diameter.
  • the longitudinal grooving bars 13, 12, and 14 impinge upon the paper, i.e.
  • the invention provides that the longitudinal grooving bars are successively pressed into the paper in the sequence 13, 12, and 14.
  • the distances of the ends of the longitudinal grooving bars increase from the transverse grooving recess or transverse grooving bar from the drive end to the other end of the rollers. These distances are indicated in FIG. 1 in sequence by 31, 32, and 33.
  • the distance 31 may be zero, as is shown in FIG. 1.
  • the distances 32 and 33 distinctly increase from the left to the right-hand side. With other papers or other sheet material, the first distance 31 also may be different from zero.
  • the article produced with the apparatus of the invention upon leaving the rollers is a paper sheet having transverse and longitudinal grooves and being zigzag folded about the parallel grooves, and deposited as a package with superposed folds before discharge from the apparatus.
  • the sheet shown in perspective view in FIG. 4 has the transverse grooves 34 and longitudinal grooves 35.
  • the sheet has been automatically folded in the apparatus along the transverse grooves. Folding along the longitudinal grooves is performed by hand outside the apparatus.
  • a receptacle 36 is positioned behind the rollers.
  • the receptacle has the form of a trough, open at the top and at the front sides, which extends parallel to the rollers and the bottom 37 of which is slightly below the deepest point of the lower roller.
  • a small side wall 38 adjacent the rollers ends slightly below the axis of rotation 3 of the lower roller 5.
  • a large side wall 39 opposite to the small wall ends above the gap between both rollers.
  • the width of the trough is somewhat larger than the distance of the transverse grooves.
  • the receptacle has such an action that the sheet leaving the rollers and provided with grooves is zigzag-folded about the grooved lines 34 when impinging upon the side wall 39. Due to the force of gravity, the folded sheet 40 descends and is collected at the bottom of the receptacle with the formation of a package.
  • An apparatus for grooving and folding sheet material which comprises a pair of rollers rotatable in opposite directions, each of said rollers having longitudinal grooving bars thereon and longitudinal grooving recesses therein for grooving the sheet material in the direction of travel thereof, said bars and recesses perpendicularly intersecting on each roller with at least one transverse grooving bar and at least one transverse grooving recess for grooving the sheet material normal to the direction of travel thereof, means for feeding the sheet material between the rollers, and receptacle means for zigzag-folding the sheet material about the grooved lines normal to the direction of travel thereof and for collecting the folded sheets.
  • rollers are spaced from each other in a small area at one end by a distance less than the thickness of a paper to be processed, and, over the remainder of the length of the rollers, they are spaced by a distance approximately equal to said thickness.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US796066A 1968-02-02 1969-02-03 Apparatus for grooving and folding sheet material Expired - Lifetime US3570841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681611375 DE1611375B2 (de) 1968-02-02 1968-02-02 Vorrichtung zum falzen und falten von blattmaterial

Publications (1)

Publication Number Publication Date
US3570841A true US3570841A (en) 1971-03-16

Family

ID=5681711

Family Applications (1)

Application Number Title Priority Date Filing Date
US796066A Expired - Lifetime US3570841A (en) 1968-02-02 1969-02-03 Apparatus for grooving and folding sheet material

Country Status (3)

Country Link
US (1) US3570841A (enrdf_load_stackoverflow)
FR (1) FR2001201A1 (enrdf_load_stackoverflow)
GB (1) GB1195183A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697062A (en) * 1968-12-04 1972-10-10 Harri Mones Machine for the zigzag folding of sheets
US3917255A (en) * 1971-12-01 1975-11-04 Procter & Gamble Apparatus for folding of a web
US3917254A (en) * 1971-12-01 1975-11-04 Procter & Gamble Apparatus for folding of a web
US4022457A (en) * 1975-06-09 1977-05-10 Pitney-Bowes, Inc. Sheet folding device
US20070254793A1 (en) * 2006-04-10 2007-11-01 Muller Martini Holding Ag Folder feeder
US20080214377A1 (en) * 2007-02-02 2008-09-04 Canon Kabushiki Kaisha Sheet processing apparatus and image forming device having the same
CN102849522A (zh) * 2012-09-14 2013-01-02 胡和萍 一种折页机的驱动棘轮装置

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3697062A (en) * 1968-12-04 1972-10-10 Harri Mones Machine for the zigzag folding of sheets
US3917255A (en) * 1971-12-01 1975-11-04 Procter & Gamble Apparatus for folding of a web
US3917254A (en) * 1971-12-01 1975-11-04 Procter & Gamble Apparatus for folding of a web
US4022457A (en) * 1975-06-09 1977-05-10 Pitney-Bowes, Inc. Sheet folding device
US20070254793A1 (en) * 2006-04-10 2007-11-01 Muller Martini Holding Ag Folder feeder
US7537557B2 (en) * 2006-04-10 2009-05-26 Müller Martini Holding AG Folder feeder
EP1964805A3 (en) * 2007-02-02 2008-09-17 Canon Kabushiki Kaisha Sheet folding and creasing apparatus allowing intermittent relative movement between the sheets and the creasing unit
US20080214377A1 (en) * 2007-02-02 2008-09-04 Canon Kabushiki Kaisha Sheet processing apparatus and image forming device having the same
US7802779B2 (en) 2007-02-02 2010-09-28 Canon Kabushiki Kaisha Sheet processing apparatus and image forming device having the same
US20110037215A1 (en) * 2007-02-02 2011-02-17 Canon Kabushiki Kaisha Sheet processing apparatus and image forming device having the same
US7922162B2 (en) 2007-02-02 2011-04-12 Canon Kabushiki Kaisha Sheet processing apparatus and image forming device having the same
EP2759412A1 (en) * 2007-02-02 2014-07-30 Canon Kabushiki Kaisha Sheet folding and creasing apparatus allowing intermittent relative movement between the sheets and the creasing unit
CN102849522A (zh) * 2012-09-14 2013-01-02 胡和萍 一种折页机的驱动棘轮装置

Also Published As

Publication number Publication date
GB1195183A (en) 1970-06-17
FR2001201A1 (enrdf_load_stackoverflow) 1969-09-26

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