US3869846A - Folding device for packaging machines - Google Patents

Folding device for packaging machines Download PDF

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Publication number
US3869846A
US3869846A US384756A US38475673A US3869846A US 3869846 A US3869846 A US 3869846A US 384756 A US384756 A US 384756A US 38475673 A US38475673 A US 38475673A US 3869846 A US3869846 A US 3869846A
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US
United States
Prior art keywords
foil
folding
article
finger
path
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
US384756A
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English (en)
Inventor
Karl-Ernst Timmerbeil
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.)
Packautomatic & Co KG Firma GmbH
Packautomatic & Co KG GmbH
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Packautomatic & Co KG GmbH
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 Packautomatic & Co KG GmbH filed Critical Packautomatic & Co KG GmbH
Application granted granted Critical
Publication of US3869846A publication Critical patent/US3869846A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/08—Reciprocating or oscillating folders

Definitions

  • a folding device on a packaging machine for wrapping goods in a foil comprises a device for feeding goods to be wrapped along a path and an arrangement for supplying a foil having lateral end portions and a front vertical foil portion as well as a rear end portion and an overhanging upper horizontal foil portion, toward 1 the path, for wrapping around the goods.
  • a device seals and cuts the foil during the feeding of the goods.
  • a rigid first folding finger effects inward folding of a front vertical portion of the foil.
  • a rear folding device includes a second folding finger for folding the rear end portion of the foil.
  • the rear folding device includes a supporting finger, and a device for setting the support ng finger intermittently below the overhanging upper horizontal foil portion.
  • the present invention relates to a folding device for a packaging machine, which wraps goods in foil and closes the ends by folding and gluing or heat-sealing, the folding inwards of the front vertical portion of the foil being effected by a rigid folding finger, while the rear end portion can be folded in by a rear folding device which travels along with the goods and is provided with a second folding finger.
  • Known foil packaging machines frequently form a wrap or sleeve, which protrudes at the side ends, around the goods. During a subsequent step the foil protruding at the ends is folded inwardly by folding device in such a manner that it rests snugly and neatly against the goods.
  • the front vertical portion of the foil is folded by a stationary folding finger, past which the wrapped material passes, while the rear vertical portion of the foil is folded in by a second folding finger of a rear folding device, which travels along with the goods to be packed and leads the same somewhat. Thereupon the remaining upper and lower horizontal portions of the foil are folded over and the foil is then fixed by heat sealing or gluing in this position.
  • the foil sleeve In order to obtain a complete closure of the ends of the package, the foil sleeve must protrude at the ends beyond the package to such an extent that an overlapping fold is possible. With an increase in the height or size ofthe goods, correspondingly more foil must therefore protrude at the ends. For a proper folding it is absolutely necessary that the protruding parts of the foil wrap extend as straight and as smoothly as possible since undulations, folds or sags in the foils prevent clean folding.
  • the folding device for a packaging machine has a rear folding device with a supporting finger which can be intermittently brought over the protruding upper horizontalal portion of the foil wrap.
  • the present invention thus does away with the overhang of the upper foil parts, which interferes with the formation of a clean. dependable fold.
  • the device acts intermittently. i.e., during a folding period in which the upper part of the foil is not as yet folded, since the front and rear ends are first folded inwardly. As soon as this has been done, the supporting finger releases the upper part of the foil for the final folding.
  • the folding finger of the rear folding device can be swingable about an axis perpendicular to the direction of transport of the goods from a position of rest outside the path of the foil into a position of action on the foil so that the folding finger and the supporting finger alternately act on the foil.
  • the unit comprising the folding finger and the supporting finger can have a rotatable shaft with the folding finger and supporting finger firmly connected with it.
  • a shaft is a structurally simple and economical drive means for the intermittently acting folding and supporting fingers.
  • the device of the invention is structurally simple and is capable, by intermittent support of sagging foil portions of producing a dependable clean fold even in the case of large packages with nonself-supporting foil wraps.
  • FIGS. 1, 3, 5 and 7 are schematic side elevations of the device of the present invention in different phases of the operation during a folding process.
  • FIGS. 2, 4, 6 and 8 are the corresponding top plan views
  • the foil required for the packaging is drawn from foil-supply rolls 4.
  • a heat-sealing device 6, consisting of two opposed members heat seals and cuts the two webs of foil behind the goods 3 and, at the same time, heat seals a seam at foil ends withdrawn from the rolls 4 and several from the package, so that a wrap is formed around the goods.
  • the cut ends of the foils withdrawn from the rolls 4 are so heat sealed to each other that they form a curtain which can intercept the leading side of an oncoming article, as can be noted in particular from FIG. 3.
  • a ski-shaped, rigid and fixed folding finger 5 which folds the front vertical portion of the overhanging foil corresponding against the end of the article.
  • This rigid folding finger 5 is so arranged that the front vertical part of the sheet is folded inwards before the heat-sealing and cutting device 6 heat-seals and cuts the webs of foil unwound from the rolls 4.
  • the latter device includes a carriage 7 shiftable in the direction of transport of the goods (arrow W) and which carries a shafts rotatable asshown abouta vertical axis- .perpendi'cular-to-the direction of. displacement of the carriage and which forms the connection between the longitudinally displaceable carriage 7 and the swingable folding finger 9, and a supporting finger 10.
  • Bifur,- cated folding finger. 9, which straddles the finger 5, and supporting finger are angularly offseton and are coupled with this shaft 8, so as to be entrained therewith in its rotation,
  • FIGS. 1 and 2 show the article 3 at a time just before the end of the formation of the sleeve.
  • the article is located with its front face already in the region of the rigid folding finger 5, so that the front vertical foil portion is folded in, while the foil parts of the wrap are still connected with the supply rolls 4.
  • the folding finger 9 is at'this point located outside the path of the foil wrap, while the supporting finger 10 is already in its active position, underlying the upper portion.
  • the foil sleeve After the heat sealing of the parts of the foil behind the goods 3, as shown in FIGS. 3 and 4, the foil sleeve is already separated from the rolls 4 and the tension under which the wrap was held previously, is no longer present, so that the upper horizontal portion 11 of the wrap tends to sag downward on the goods. This sagging horizontal portion 11 rests on the supporting finger 10, to provide room for the inward folding of the rear vertical portion of the foil.
  • the shaft 8 is then rotated and the fork-shaped movable folding finger 9, by swinging in the direction towards the goods 3, folds the rear part of the wrap inwards.
  • the entire rearfolding device moves via the carriage 7 in the direction of transport W of the goods, until the rear vertical portion which has been folded in by the folding finger 9 is located beneath the rigid folding finger 5, as shown in FIGS. 7 and 8.
  • the supporting finger 10 Simultaneously with the inward swinging of the folding finger 9, the supporting finger 10, which is coupled with the folding finger 9, so as to be carried along upon the swinging thereof, clears the upper horizontal portion 11 of the foil to enable it to fold downwardly.
  • the entire rear folding device moves back via the carriage 7 into the starting position, shown in FIGS. 1 and 2, only when the front edge of the next article 3' is at the rigid folding finger 5.
  • the folding finger 9 upon backward movement, can pass into the sleeve.
  • the shaft 8 turns the folding finger 9 out of the wrap and the supporting finger 10 is at the same time turned into the next sleeve, after the heat-sealing of the wrap which then takes place, to support the upper horizontal portion of of the next wrap. The process is then repeated in the manner described above.
  • transport means for feeding said articles along a path
  • a fixed first folding finger disposed along said path and engageable with the vertical front portion of a sleeve wrapped around an article displaced along said path for folding said vertical front portion inwardly against the latter article;
  • a second folding finger mounted on said shaft below said support finger and angularly offset therefrom which swings by said shaft into engagement with said rear vertical portion to fold the same inwardly against the article into a space maintained by the support of said horizontal upper portion by said support.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
US384756A 1972-08-02 1973-08-01 Folding device for packaging machines Expired - Lifetime US3869846A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2237948A DE2237948C3 (de) 1972-08-02 1972-08-02 Faltvorrichtung an Verpackungsmaschinen

Publications (1)

Publication Number Publication Date
US3869846A true US3869846A (en) 1975-03-11

Family

ID=5852435

Family Applications (1)

Application Number Title Priority Date Filing Date
US384756A Expired - Lifetime US3869846A (en) 1972-08-02 1973-08-01 Folding device for packaging machines

Country Status (3)

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US (1) US3869846A (it)
DE (1) DE2237948C3 (it)
IT (1) IT993631B (it)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041677A (en) * 1975-10-06 1977-08-16 Anderson Bros. Mfg. Co. Packaging apparatus
US4215525A (en) * 1978-05-16 1980-08-05 Johns-Nigrelli-Johns Tray forming machine
US4959945A (en) * 1989-08-15 1990-10-02 Valley Tissue Packaging, Inc. Folder
US5537806A (en) * 1995-02-28 1996-07-23 International Paper Company Bag sealing apparatus and related method for sealing bags
US20040255557A1 (en) * 2003-06-18 2004-12-23 Shanklin Norman D. Adjustable package geometry web forming apparatus and method
US9926089B2 (en) 2008-10-22 2018-03-27 Khs Gmbh Method and device for the production of a packaged unit
US20220250776A1 (en) * 2019-08-01 2022-08-11 Khs Gmbh Device and Method for Producing Bundles of Individual Packages
US12187468B2 (en) * 2021-10-19 2025-01-07 Guangzhou Lianrou Machinery & Equipment Co., Ltd. Mattress packaging device and packaging method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3001541A1 (de) * 1980-01-17 1981-08-20 Adolf Reker Maschinenfabrik und Baggerbau GmbH, 4937 Lage Verfahren und vorrichtung zum falten und verschliessen des oberbodens einer kunststoffumhuellung einer palettenladung
DE3907615A1 (de) * 1989-03-09 1990-09-13 Focke & Co Vorrichtung (verpackungsmaschine) zum verpacken von gegenstaenden unterschiedlicher groesse
DE102011018839A1 (de) * 2011-04-27 2012-10-31 Winkler + Dünnebier Gmbh Verfahren zum Verpacken von Produkten und Verpackungsanlage zur Durchführung des Verfahrens

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1195721A (en) * 1916-08-22 wrappingfmachine
US1195228A (en) * 1916-08-22 Assigbtob to johsfsost auto
US2609646A (en) * 1948-08-10 1952-09-09 Mach Automatiques Bardet Machine for making up parcels and packages
US2756553A (en) * 1951-04-16 1956-07-31 Jl Ferguson Co Apparatus for handling packages
US2831303A (en) * 1954-12-16 1958-04-22 B U Supplies & Machinery Compa Machines adapted for applying wrappers
US3520103A (en) * 1968-05-06 1970-07-14 Charles R Stevens Apparatus for tucking in vertical end webs of an overwrap
US3739547A (en) * 1971-01-28 1973-06-19 Auburn Eng Inc Shrink-wrapping method and apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1195721A (en) * 1916-08-22 wrappingfmachine
US1195228A (en) * 1916-08-22 Assigbtob to johsfsost auto
US2609646A (en) * 1948-08-10 1952-09-09 Mach Automatiques Bardet Machine for making up parcels and packages
US2756553A (en) * 1951-04-16 1956-07-31 Jl Ferguson Co Apparatus for handling packages
US2831303A (en) * 1954-12-16 1958-04-22 B U Supplies & Machinery Compa Machines adapted for applying wrappers
US3520103A (en) * 1968-05-06 1970-07-14 Charles R Stevens Apparatus for tucking in vertical end webs of an overwrap
US3739547A (en) * 1971-01-28 1973-06-19 Auburn Eng Inc Shrink-wrapping method and apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4041677A (en) * 1975-10-06 1977-08-16 Anderson Bros. Mfg. Co. Packaging apparatus
US4215525A (en) * 1978-05-16 1980-08-05 Johns-Nigrelli-Johns Tray forming machine
US4959945A (en) * 1989-08-15 1990-10-02 Valley Tissue Packaging, Inc. Folder
US5537806A (en) * 1995-02-28 1996-07-23 International Paper Company Bag sealing apparatus and related method for sealing bags
US20040255557A1 (en) * 2003-06-18 2004-12-23 Shanklin Norman D. Adjustable package geometry web forming apparatus and method
US7013621B2 (en) * 2003-06-18 2006-03-21 Shanklin Corporation Adjustable package geometry web forming apparatus and method
US9926089B2 (en) 2008-10-22 2018-03-27 Khs Gmbh Method and device for the production of a packaged unit
US20220250776A1 (en) * 2019-08-01 2022-08-11 Khs Gmbh Device and Method for Producing Bundles of Individual Packages
US12145754B2 (en) * 2019-08-01 2024-11-19 Khs Gmbh Device and method for producing bundles of individual packages
US12187468B2 (en) * 2021-10-19 2025-01-07 Guangzhou Lianrou Machinery & Equipment Co., Ltd. Mattress packaging device and packaging method

Also Published As

Publication number Publication date
DE2237948B2 (de) 1974-05-22
DE2237948A1 (de) 1974-02-21
IT993631B (it) 1975-09-30
DE2237948C3 (de) 1975-01-09

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