EP1123236A1 - Rotatable flap folder - Google Patents

Rotatable flap folder

Info

Publication number
EP1123236A1
EP1123236A1 EP99970638A EP99970638A EP1123236A1 EP 1123236 A1 EP1123236 A1 EP 1123236A1 EP 99970638 A EP99970638 A EP 99970638A EP 99970638 A EP99970638 A EP 99970638A EP 1123236 A1 EP1123236 A1 EP 1123236A1
Authority
EP
European Patent Office
Prior art keywords
carton
flap
cylindrical segment
flap folder
cartons
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.)
Granted
Application number
EP99970638A
Other languages
German (de)
French (fr)
Other versions
EP1123236B1 (en
Inventor
Jean-Michel Garnier
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.)
WestRock Packaging Systems LLC
Original Assignee
Mead Corp
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 Mead Corp filed Critical Mead Corp
Publication of EP1123236A1 publication Critical patent/EP1123236A1/en
Application granted granted Critical
Publication of EP1123236B1 publication Critical patent/EP1123236B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/20—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by folding-down preformed flaps

Definitions

  • the invention relates to continuous-motion cartoning machines and, more particularly, relates to a mechanism capable of operating as both a static flap folder and a rotatably reciprocating flap folder.
  • Continuous-motion cartoning machines are useful for packaging multiple articles such as beverage cans in cartons or other packaging components.
  • An example of a continuous-motion cartoning machine is shown in U.S. patent No. 5,241,806 to Ziegler et al.
  • a flap folder In a cartoning (or packaging) machine, a flap folder generally causes the side or end flap of a side- or end- loaded carton to be folded into flat-face relationship with an end or side panel or flap to which glue has been applied.
  • the operation of a packaging (cartoning) machine is sometimes interrupted before a side or end flap is folded into face-to-face contact with the side or end panel and/or flap to which glue has been applied. It can be appreciated that it would be useful to have a means for folding a carton flap into a sealable position with respect to an end or side panel and/or flap to which an adhesive has been applied when the operation of the machine has been interrupted. It can be further appreciated that it would be useful to have such a means that also folds carton flaps to a sealable position during regular continuous motion of the machine.
  • a cylindrical segment having a longitudinal axis has a helical edge which serves as a static flap folding edge for a carton in translatory motion with respect to the cylindrical segment.
  • the cylindrical segment is reciprocally rotatable about an axis such that when the cylindrical segment rotates the helical edge progressively engages and folds a flap of a carton disposed at the helical edge.
  • Fig. 1 is an isometric illustration of a continuous-motion cartoning machine suitable for incorporation of a rotatable flap folder, in accordance with a preferred embodiment of the invention.
  • Fig. 2 is an isometric illustration of a rotatable flap folder, in accordance with a preferred embodiment of the invention, suitable for use in the machine environment of Fig. 1 illustrated with cartons engaged in translatory motion with respect to the flap folder.
  • Fig. 3 is an isometric illustration of the rotatable flap folder of Fig. 2 illustrated in conjunction with a carton having unfolded, unsealed flaps, wherein the carton is stationary.
  • Fig. 4 is the isometric illustration of the invention as shown in Fig. 3 but wherein the invention has been rotated to close the flaps that were extended in Fig. 3.
  • Fig. 5 is a downstream, end view of the invention in conjunction with a carton as is shown isometrically in Fig. 2 and Fig. 3.
  • a continuous-motion cartoning machine M suitable for incorporation of a rotatable flap folder in accordance with a preferred embodiment of the invention.
  • the carton hopper 10 receives collapsed cartons C stacked in substantially upright condition as shown.
  • Cartons C are withdrawn from the carton hopper 10 by the adjustable carton feeder 20 and then deposited in substantially erect condition at the beginning of the carton conveyor 30.
  • articles, such as beverage cans, to be packaged in the cartons C are also translated through the machine in synchronous motion with the cartons.
  • An article conveyor 40 and article lane arrangement 50 form an article transport that urges the articles into the cartons C.
  • Article-engaging wheels 60 complete the process of placement of the articles into cartons C.
  • Side-flap folding wheels 70 (partially obstructed in Fig. 1) engage and inwardly fold the side flaps of cartons having side flaps.
  • Glue is applied to the cartons C at a gluing station 80.
  • a sealing station 90 end flaps of the cartons C are pressed and held into contact with glue that has been previously applied.
  • Packaged, sealed cartons are ejected from the machine at the ejection station 100.
  • a rotatable flap folder 800 disposed adjacent cartons Cl, C2 traveling in translatory motion with respect to the flap folder 800.
  • the cartons Cl, C2 are traveling downstream in a direction indicated by the direction arrow 801.
  • the carton Cl which is upstream, particularly with respect to the downstream carton C2 has end or side flaps E, F which lie extended away from the end/side walls of the carton C 1.
  • end and side may be considered interchangeable in the description of the invention, the structure of the cartons C and the operation of the invention are the same irrespective of whether the flaps to be folded are referred to as "side" flaps or "end” flaps.
  • the term “flap” is interchangeable with the term "panel.”
  • the flap folder 800 is a structure 802 which is generally a segment of a cylinder which is formed about an axis 803.
  • the cylindrical segment 802 has a helical edge 804 which is its flap-contacting portion. It is to be noted that in a typical machine environment a flap folder is disposed at either side of the carton. Only one flap folder is shown in the accompanying figures for clarity and brevity. The structure and operation of an opposing flap folder would mirror that of the flap folder 800 illustrated and discussed. Illustration and discussion of one flap folder 800 does not and is not intended to limit the scope or applicability of the invention.
  • the flap folder 800 serves as a stationary folding device.
  • FIG. 3 and Fig. 4 the method of operation of the invention as a reciprocally-rotating flap folder is illustrated.
  • a carton C3 is shown in phantom view so that the elements of the invention and the operation thereof can be clearly seen.
  • the carton C3 is shown in a substantially stationary position although the invention is also applicable to cartons which are in translatory motion as depicted in Fig. 2.
  • the carton C3 is shown in a substantially stationary position because this is the situation of greatest applicability of the invention.
  • the flap folder 800 is rotated about the axis 803 such that the helical edge 804 urges the flap F downward and inward into face-to-face relationship with the end/side of the carton C3.
  • the cylindrical segment 802 can be made to rotate by any known drive train means; for example, a motor driving a drive shaft 806 which is coaxial with the axis 803 and at least one spoke element 808 interconnecting the drive shaft and cylindrical segment 802.
  • a motor driving a drive shaft 806 which is coaxial with the axis 803 and at least one spoke element 808 interconnecting the drive shaft and cylindrical segment 802.
  • the invention 800 is disposed at the path of a carton C such that a line along the end/side wall of the carton C is coincident with the tangent line of cylindrical segment 802.
  • a bead of glue (exaggerated for clarity in Fig 5) is applied along the tangent line G so that the wall of the cylindrical segment 802 presses the flap F against the glue line G during translation of the carton C downstream and also upon rotation of the cylindrical segment 802.
  • the structure of the invention provides a flap folder 800 which is capable of functioning as a stationary flap folder for cartons C in translatory motion and a reciprocally-rotatable flap folder for a stationary or moving carton C.

Abstract

A cylindrical segment having a longitudinal axis has a helical edge which serves as a static flap folding edge for a carton in translatory motion with respect to the cylindrical segment. The cylindrical segment is reciprocally rotatable about an axis such that when the cylindrical segment rotates the helical edge progressively engages and folds a flap of a carton disposed at the helical edge.

Description

ROTATABLE FLAP FOLDER
The invention relates to continuous-motion cartoning machines and, more particularly, relates to a mechanism capable of operating as both a static flap folder and a rotatably reciprocating flap folder.
Continuous-motion cartoning machines are useful for packaging multiple articles such as beverage cans in cartons or other packaging components. An example of a continuous-motion cartoning machine is shown in U.S. patent No. 5,241,806 to Ziegler et al.
In a cartoning (or packaging) machine, a flap folder generally causes the side or end flap of a side- or end- loaded carton to be folded into flat-face relationship with an end or side panel or flap to which glue has been applied. The operation of a packaging (cartoning) machine is sometimes interrupted before a side or end flap is folded into face-to-face contact with the side or end panel and/or flap to which glue has been applied. It can be appreciated that it would be useful to have a means for folding a carton flap into a sealable position with respect to an end or side panel and/or flap to which an adhesive has been applied when the operation of the machine has been interrupted. It can be further appreciated that it would be useful to have such a means that also folds carton flaps to a sealable position during regular continuous motion of the machine.
Summary of the Invention
In accordance with a preferred embodiment of the present invention, a cylindrical segment having a longitudinal axis has a helical edge which serves as a static flap folding edge for a carton in translatory motion with respect to the cylindrical segment. The cylindrical segment is reciprocally rotatable about an axis such that when the cylindrical segment rotates the helical edge progressively engages and folds a flap of a carton disposed at the helical edge. Other advantages and objects of the present invention will be apparent from the following description, the accompanying drawings, and the appended claims.
Brief Description of the Drawings
Fig. 1 is an isometric illustration of a continuous-motion cartoning machine suitable for incorporation of a rotatable flap folder, in accordance with a preferred embodiment of the invention.
Fig. 2 is an isometric illustration of a rotatable flap folder, in accordance with a preferred embodiment of the invention, suitable for use in the machine environment of Fig. 1 illustrated with cartons engaged in translatory motion with respect to the flap folder.
Fig. 3 is an isometric illustration of the rotatable flap folder of Fig. 2 illustrated in conjunction with a carton having unfolded, unsealed flaps, wherein the carton is stationary.
Fig. 4 is the isometric illustration of the invention as shown in Fig. 3 but wherein the invention has been rotated to close the flaps that were extended in Fig. 3.
Fig. 5 is a downstream, end view of the invention in conjunction with a carton as is shown isometrically in Fig. 2 and Fig. 3.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Throughout the drawings the same reference numerals are used to denote the same or like features of the invention.
Referring first to Fig. 1, therein is illustrated a continuous-motion cartoning machine M, suitable for incorporation of a rotatable flap folder in accordance with a preferred embodiment of the invention. In the machine, the carton hopper 10 receives collapsed cartons C stacked in substantially upright condition as shown. Cartons C are withdrawn from the carton hopper 10 by the adjustable carton feeder 20 and then deposited in substantially erect condition at the beginning of the carton conveyor 30. As cartons are continuously engaged and translated through the machine M, articles, such as beverage cans, to be packaged in the cartons C are also translated through the machine in synchronous motion with the cartons. An article conveyor 40 and article lane arrangement 50 form an article transport that urges the articles into the cartons C. Article-engaging wheels 60 complete the process of placement of the articles into cartons C. Side-flap folding wheels 70 (partially obstructed in Fig. 1) engage and inwardly fold the side flaps of cartons having side flaps. Glue is applied to the cartons C at a gluing station 80. At a sealing station 90, end flaps of the cartons C are pressed and held into contact with glue that has been previously applied. Packaged, sealed cartons are ejected from the machine at the ejection station 100.
Referring now to Fig. 2, therein is illustrated a rotatable flap folder 800 disposed adjacent cartons Cl, C2 traveling in translatory motion with respect to the flap folder 800. The cartons Cl, C2 are traveling downstream in a direction indicated by the direction arrow 801. The carton Cl which is upstream, particularly with respect to the downstream carton C2, has end or side flaps E, F which lie extended away from the end/side walls of the carton C 1. The terms "end" and "side" may be considered interchangeable in the description of the invention, the structure of the cartons C and the operation of the invention are the same irrespective of whether the flaps to be folded are referred to as "side" flaps or "end" flaps. Similarly,the term "flap" is interchangeable with the term "panel."
In a packaging/cartoning machine glue typically has been applied prior to the arrival of the cartons C at the flap folder 800. The flap folder 800 is a structure 802 which is generally a segment of a cylinder which is formed about an axis 803. The cylindrical segment 802 has a helical edge 804 which is its flap-contacting portion. It is to be noted that in a typical machine environment a flap folder is disposed at either side of the carton. Only one flap folder is shown in the accompanying figures for clarity and brevity. The structure and operation of an opposing flap folder would mirror that of the flap folder 800 illustrated and discussed. Illustration and discussion of one flap folder 800 does not and is not intended to limit the scope or applicability of the invention.
As the upstream carton Cl with extended flaps E, F translates downstream the extended flaps E, F and helical edge 804 of the flap folder 800 (as previously noted, a second flap folder is not depicted for brevity and clarity) engage one another in a progressive manner such that as the flap F travels the path of the helical edge it is ultimately pressed into face-to-face relationship with the end/side of the carton C. In this manner, the flap folder 800 serves as a stationary folding device.
Referring now to Fig. 3 and Fig. 4, the method of operation of the invention as a reciprocally-rotating flap folder is illustrated. A carton C3 is shown in phantom view so that the elements of the invention and the operation thereof can be clearly seen. The carton C3 is shown in a substantially stationary position although the invention is also applicable to cartons which are in translatory motion as depicted in Fig. 2. The carton C3 is shown in a substantially stationary position because this is the situation of greatest applicability of the invention. In order to close the flap F of the stationary carton C3, the flap folder 800 is rotated about the axis 803 such that the helical edge 804 urges the flap F downward and inward into face-to-face relationship with the end/side of the carton C3. The degree of rotation is that suitable to ensure closure of the flap. In the preferred embodiment illustrated in Fig. 4, a suitable rotation of 90 degrees has been used. Referring now to Fig. 5, the cylindrical segment 802 can be made to rotate by any known drive train means; for example, a motor driving a drive shaft 806 which is coaxial with the axis 803 and at least one spoke element 808 interconnecting the drive shaft and cylindrical segment 802.
Referring now simultaneously to Fig. 3 and Fig. 5, an additional feature of the invention is shown. The invention 800 is disposed at the path of a carton C such that a line along the end/side wall of the carton C is coincident with the tangent line of cylindrical segment 802. In the method employed in accordance with the invention, a bead of glue (exaggerated for clarity in Fig 5) is applied along the tangent line G so that the wall of the cylindrical segment 802 presses the flap F against the glue line G during translation of the carton C downstream and also upon rotation of the cylindrical segment 802.
The structure of the invention provides a flap folder 800 which is capable of functioning as a stationary flap folder for cartons C in translatory motion and a reciprocally-rotatable flap folder for a stationary or moving carton C.
Modifications may be made in the foregoing without departing from the scope and spirit of the claimed invention.
What is claimed is:

Claims

CLAIMS:
1. A rotatable flap folder comprising: a cylindrical segment structure having a helical edge rotatable about a longitudinal axis.
2. A method for closing a carton flap comprising: disposing a carton having an extended carton flap adjacent a cylindrical segment structure having a helical edge wherein the extended carton flap is disposed proximate said helical edge; then rotating said cylindrical segment structure so as to thereby urge the carton flap into face-to-face relationship with an end of the carton.
3. The invention of claim 2, wherein the cylindrical segment structure is rotate about 90 degrees.
4. The invention of claim 2, wherein prior to engagement of the carton by said cylindrical segment structure adhesive is applied to an end wall of the carton to which the carton flap is to be pressed along a line which is coincident with a tangent line along which a cylindrical wall of said cylindrical segment structure contacts the carton.
EP99970638A 1998-10-21 1999-10-21 Rotatable flap folder Expired - Lifetime EP1123236B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US17563198A 1998-10-21 1998-10-21
US175631 1998-10-21
PCT/US1999/024617 WO2000023321A1 (en) 1998-10-21 1999-10-21 Rotatable flap folder

Publications (2)

Publication Number Publication Date
EP1123236A1 true EP1123236A1 (en) 2001-08-16
EP1123236B1 EP1123236B1 (en) 2004-04-28

Family

ID=22641015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99970638A Expired - Lifetime EP1123236B1 (en) 1998-10-21 1999-10-21 Rotatable flap folder

Country Status (6)

Country Link
EP (1) EP1123236B1 (en)
AU (1) AU772675B2 (en)
BR (1) BR9914690A (en)
ES (1) ES2220145T3 (en)
MX (1) MXPA01003928A (en)
WO (1) WO2000023321A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7641607B2 (en) 2006-10-28 2010-01-05 Meadwestvaco Packaging Systems, Llc Packaging machine with folding apparatus
US20080110135A1 (en) 2006-11-15 2008-05-15 Jacob Jeffrey G Packaging machine with pivoting minor flap retainer and rotating glue gun assembly
DE102013221031A1 (en) * 2013-10-16 2015-04-16 Robert Bosch Gmbh conveyor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2328758A (en) * 1942-01-15 1943-09-07 Pneumatic Scale Corp Packaging machine
FR1347238A (en) * 1962-11-17 1963-12-27 Machine for closing boxes with folding end elements
US3703067A (en) * 1970-10-06 1972-11-21 Procter & Gamble Rotating carton flap manipulator
US5826408A (en) * 1997-05-08 1998-10-27 Riverwood International Corporation Rotary flap tucker for a cartoning machine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0023321A1 *

Also Published As

Publication number Publication date
BR9914690A (en) 2001-07-10
MXPA01003928A (en) 2003-03-10
AU1216600A (en) 2000-05-08
ES2220145T3 (en) 2004-12-01
EP1123236B1 (en) 2004-04-28
WO2000023321A1 (en) 2000-04-27
AU772675B2 (en) 2004-05-06

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