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US3759506A - Device and method for forming an accordian pile from a continuous web, using an air current parallel to the web - Google Patents

Device and method for forming an accordian pile from a continuous web, using an air current parallel to the web Download PDF

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Publication number
US3759506A
US3759506A US00136767A US3759506DA US3759506A US 3759506 A US3759506 A US 3759506A US 00136767 A US00136767 A US 00136767A US 3759506D A US3759506D A US 3759506DA US 3759506 A US3759506 A US 3759506A
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US
United States
Prior art keywords
web
plate
apertures
air
forming
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
US00136767A
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English (en)
Inventor
R Eckl
K Janson
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.)
Boewe Boehler and Weber KG
Original Assignee
Boewe Boehler and Weber 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
Application filed by Boewe Boehler and Weber KG filed Critical Boewe Boehler and Weber KG
Application granted granted Critical
Publication of US3759506A publication Critical patent/US3759506A/en
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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
    • B65H45/02—Folding limp material without application of pressure to define or form crease lines
    • B65H45/06—Folding webs
    • B65H45/10—Folding webs transversely
    • B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
    • B65H45/1015—Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/18—Multiple web-feeding apparatus

Definitions

  • ABSTRACT A device for forming an accordion pile from a continuous web has an upright guide plate along which a web formed with equispaced and oppositely directed creases is passed. A support surface is provided below the plate to intercept the web and support the pile. A current of air is caused to flow at high speed parallel to the plate surface between the plate and the web in at least the lower region of the plate to hold very thin webs against the plate as they slide downwardly even at very low speeds. This current of air can be directed in the direction of or transverse to the direction of feed of the web.
  • the invention relates to a device for the delivery of a continuous web in the form of an accordion folded pile, the device comprising a guide plate or the like for feeding the web to the pile.
  • Devices of this kind are used in plants of various kinds, such as separators, printers, and the like, in which continuous webs, particularly continuous stationary, are processed.
  • the invention resides in providing flator sheet-like air currentflowing parallel to the surfaces of the web and of the guide plate between the web and the guide plate at least in the lower zone of the guide plate adjacent the pile.
  • the static pressure of the sheet-like flow in its edge zones adjacent the plate and the web is lower than the static pressure in the center of the stream and as a result of this reduced pressure the web is urged by a higher ambient pressure toward the air layer flowing between the web and the plate and thus slides thereon substantially without friction.
  • the stiffness imparted thereto is sufiicient to ensure that, in the zone of its outwardly directed folds, the web contacts the bottom of the pile in the desired manner characteristic of accordion folding.
  • the air flows ad-. vantageously between the web and the guide plate in a direction transversely of the direction of conveyance-of the web, the air flowing preferably from about the mid-.
  • the guide plate is provided with openings for the passage of air. On the side of the, plate opposite the web, these openings open out into an air intake connected to a blower.
  • the air intake may have the fonn of any suitable air conduit or air duct. It may also function as a high-pressure chamber from which the air flows under an appropriate pressure.
  • the openings are provided in the form of two rows of holes extending downwardly from about the middle of the guide plate and directed in opposite directions.
  • the areaof the guide plate provided with the rows of holes may thus constitute part of the wall of a preferably rect angular air shaft provided to the rear of the guide plate, the air shaft being connected to a blower.
  • a relatively simple construction, which may be produced at low cost, is thus obtained.
  • the openings in the guide plate may be of a substantially nozzle-like construction.
  • this zone extends advantageously upwards to a level above the pile by an amount corresponding at least to the length of a web section corresponding substantially to the length of the pile.
  • FIG. 2 shows, on an enlarged scale, a vertical section through a detail of FIG. 1;
  • FIG. 3 shows a detail of a side view looking from the left at the device shown in FIG. 1 or in FIG. 2;
  • FIG. 4 is a section along the line IV-IV of FIG. 3;
  • FIG. 5 is a section along the line VV of FIG. 3;
  • FIGS. 6 and 7 show two modifications of FIG. 3;
  • FIG. 8 shows, by way of example, several phases of the sequence of movement in the delivery according to the invention.
  • FIG. 9 illustrates an undesirable delivery of thin paper without application of the invention.
  • a continuous precreased web 1 runs in known manner over a guide roller 2 and along a guide plate 3 in the direction of the arrow 4 downwards to be folded in known manner into an accordion pile 5 as the respective outwardly directed folding edge or crease 6 comes to lie outwardly in the direction of the arrow 8 when the lower edge of the corresponding section 7 of the web strikes against the pile.
  • an air current flowing parallel to the plate 3 and the surface of the web is generated between the web I and the guide plate 3, since, owing to its inadequate stiffness, the respective lower section 7 of thin webs of paper bends below the folding edge 6 and moves outwardly uncontrolled so that the desired movement of the folding edge 6 indicatedby the arrow 8, fails to come about.
  • the device according to the invention illustrated in FIGS. 3, 4 and 5 is, for this purpose, provided with two rows of openings 9 and 10 extending from about the middle of the guide plate 3 downwards and opening respectively butwards in the direction of the edges of the plate 3. In this construction, the openings 9 and 10 have been punched into the plate 3 so that as shown in FIG. 3, the
  • edge zone 11 of each opening, which edge sone is formed by the plate has substantially the form of a nozzle.
  • the air intake in the form of a rectangular air shaft 12 to which a blower 13 is connected, is provided at the back of the guide plate 3 which back is remote from the web 1, behind the holes 9 and 10. Since the shaft is otherwise closed all round, the air fed by the blower 13 to the air shaft 12 can only escape through the holes 9 and with the result that it flows from the centre outwards to the edges of the plate as indicated, for example, by flow lines 14 and 15 in FIGS. 2 and 3.
  • the air fed by the blower 13 to the air shaft 12 escapes through the holes 9 and 10 to flow parallel to and between the guide plate 3 and the web 1. Owing to the low pressure in the boundary layers of the air current, which boundary layers are adjacent the surfaces of the web 1 and of the guide plate 3, the web 1 is, as mentioned proviously, drawn in the direction of the guide plate 3 and thus, resting on the air cushion between the web 1 and the guide plate 3, slides thereon substantially without friction.
  • FIG. 8 shows several consecutive phases of the movement of the paper, particularly of the movement of the folding edge 6.
  • the folding edge 6 moves from the position shown on the extreme left of FIG. 8 gradually downwards to the left as the section of the web of paper, which section is below the folding edge 6, is held in position on the plate 3 by the air current.
  • the folding edge reaches eventually the position 6' on the extreme right of FIG. 8, so that the two web sections adjacent the edge fall on to the pile 5 in the desired, folded condition.
  • FIG. 9 shows by way of example an undesired, totally irregular delivery in a confused tangle 5'.
  • an irregular and undesired delivery may result from an inadequate stiffness of thin paper when the web 1 is moved downwardly along the plate 3 at an inadequate speed.
  • the direction of flow of the air current between the continuous web 1 and the guide plate 3 is basically of no consequence.
  • the important feature of the invention is simply that the air current must flow parallel to the web and to the guide plate.
  • the air current need not necessarily flow in a direction transversely of the direction of conveyance 4 of the web 1 shown in FIGS. 2 to 5. It may also flow from various positions in various directions as shown in FIG. 6, or it may flow in a single direction upwards or downwards as shown in FIG. 7.
  • the openings 9', shown in FIG. 7, are of a similar kind as those shown in FIGS.
  • the openings 17 provided in the construction illustrated in FIG. 6 enable the air to escape radially in all directions. It will be understood that corresponding air intakes of a kind similar to those shown in FIGS. 1 to 5 may be provided behind the openings 9', 17.
  • a certain degree of stagnation of the air at the upper and /or lower ends of the guide plate 3 has to be expected, since the air which initially does not flow outwards in the direction of the edges of the plate, has to be deflected. It will, however, be appreciated that the basic principle of the invention is not limited to the constructions illustrated in the drawings.
  • a device for forming an accordion pile from a web comprising:
  • an upright guide plate for said web having a substantially vertical surface
  • said means forming said air current including a plurality of apertures formed 'in said guide plate, a source of air under pressure communicating with said apertures for causing air flow therethrough from the side of said plate remote from said surface, and structures associated with said apertures for directing the air outflow thereof along said surface of said guide plate.
  • said forming means includes an air shaft formed with said apertures and partly constituted by said plate, said air shaft being operatively connected to said blower.
  • a method of forming an accordion pile of a web comprising the steps of:

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  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
US00136767A 1970-05-20 1971-04-23 Device and method for forming an accordian pile from a continuous web, using an air current parallel to the web Expired - Lifetime US3759506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2024624A DE2024624C3 (de) 1970-05-20 1970-05-20 Vorrichtung zur Führung einer vorgefalteten Endlosbahn

Publications (1)

Publication Number Publication Date
US3759506A true US3759506A (en) 1973-09-18

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ID=5771572

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Application Number Title Priority Date Filing Date
US00136767A Expired - Lifetime US3759506A (en) 1970-05-20 1971-04-23 Device and method for forming an accordian pile from a continuous web, using an air current parallel to the web

Country Status (4)

Country Link
US (1) US3759506A (de)
DE (1) DE2024624C3 (de)
FR (1) FR2092370A5 (de)
GB (1) GB1287868A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829080A (en) * 1971-06-30 1974-08-13 Mohawk Data Sciences Corp Fan-folded paper stacker for high speed printer
EP1918235A2 (de) * 2006-11-02 2008-05-07 Ilapak International S.A. Verfahren und Gerät zur akkordeonartigen Stapelung streifenförmiger Karten
US20090197751A1 (en) * 2007-12-05 2009-08-06 Greg Gale Continuous feeder for paper folding machine and paper folding machine incorporating same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1439758A (en) * 1972-11-01 1976-06-16 Girling Ltd Hydraulic brake actuators fitted with automatic slack adjusters
BE845237A (fr) * 1976-08-16 1976-12-16 Mecanisme transporteur et plieur d'une bande de papier

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032337A (en) * 1959-05-04 1962-05-01 Voit Rubber Corp Continuous stacking system
US3170685A (en) * 1963-06-10 1965-02-23 Jr Frank M Biggar Sheet material folding method and apparatus
US3278178A (en) * 1964-04-27 1966-10-11 Boewe Boehler & Weber Kg Masch Means for depositing continuous sets of forms
US3442503A (en) * 1962-10-10 1969-05-06 Bell & Howell Co Device for fan folding documents
US3464610A (en) * 1966-11-17 1969-09-02 Mohawk Data Sciences Corp Fan-folded paper stacker

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3032337A (en) * 1959-05-04 1962-05-01 Voit Rubber Corp Continuous stacking system
US3442503A (en) * 1962-10-10 1969-05-06 Bell & Howell Co Device for fan folding documents
US3170685A (en) * 1963-06-10 1965-02-23 Jr Frank M Biggar Sheet material folding method and apparatus
US3278178A (en) * 1964-04-27 1966-10-11 Boewe Boehler & Weber Kg Masch Means for depositing continuous sets of forms
US3464610A (en) * 1966-11-17 1969-09-02 Mohawk Data Sciences Corp Fan-folded paper stacker

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3829080A (en) * 1971-06-30 1974-08-13 Mohawk Data Sciences Corp Fan-folded paper stacker for high speed printer
EP1918235A2 (de) * 2006-11-02 2008-05-07 Ilapak International S.A. Verfahren und Gerät zur akkordeonartigen Stapelung streifenförmiger Karten
EP1918235A3 (de) * 2006-11-02 2009-11-04 Ilapak International S.A. Verfahren und Gerät zur akkordeonartigen Stapelung streifenförmiger Karten
US20090197751A1 (en) * 2007-12-05 2009-08-06 Greg Gale Continuous feeder for paper folding machine and paper folding machine incorporating same
US7938764B2 (en) * 2007-12-05 2011-05-10 Greg Gale Continuous feeder for paper folding machine and paper folding machine incorporating the same

Also Published As

Publication number Publication date
DE2024624B2 (de) 1979-07-19
GB1287868A (de) 1972-09-06
DE2024624C3 (de) 1980-03-06
FR2092370A5 (de) 1972-01-21
DE2024624A1 (de) 1972-04-13

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