US3200563A - Machine for flat-sealing an end of a heat-sealable lining of a box of parallelepipedic shape - Google Patents

Machine for flat-sealing an end of a heat-sealable lining of a box of parallelepipedic shape Download PDF

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Publication number
US3200563A
US3200563A US383312A US38331264A US3200563A US 3200563 A US3200563 A US 3200563A US 383312 A US383312 A US 383312A US 38331264 A US38331264 A US 38331264A US 3200563 A US3200563 A US 3200563A
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United States
Prior art keywords
lining
box
sealing
plates
members
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Expired - Lifetime
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US383312A
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English (en)
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Berghgracht Marius
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Individual
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Individual
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    • 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
    • B65B7/18—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by collapsing mouth portion and subsequently folding-down or securing flaps
    • 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
    • B65B7/02—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks
    • B65B7/06—Closing containers or receptacles deformed by, or taking-up shape, of, contents, e.g. bags, sacks by collapsing mouth portion, e.g. to form a single flap

Definitions

  • This invention relates to machines for eifecting the closure of the ends of the heat-scalable lining of a packing box of parallelepipedic shape, the object being to provide improvements therein.
  • Boxes of this kind usually comprise a sheath of cardboard or the like whose body has at its ends folding flaps adapted to form the box ends after closure of the heatsealable lining disopsed in the sheath, the ends of the lining projecting beyond the ends of the sheath body.
  • a lining end To close a lining end the same must be flattened along the central plane of the box, then welded or sealed by being pressed between heated jaws. Sealing is satisfactory only if the tow halves of the lining end bear absolutely flat against one another without the slightest creasing; failure to do this means that the weld has microscopic channels or flaws, as is often the case when the known systems for closing boxes of this kind are used.
  • the packing cannot therefore be closed hermetically, something which is very disadvantageous in the case of vacuum-packed liquids, pastes and solids.
  • a machine comprises two flattening members normally disposed outside the lining end, means for introducing the flattening members into the lining end and for separating them from each otheralong the central plane of the box by forcing them against diametrically opposite places of the lining until the flattening members substantially flatten the lining end, two spaced-apart plates or strips or the like disposed on either side of the lining end, means for moving the said plates transversely of the central plane until the plates press between them the flattened lining end along a line further away from the end edge of the lining than the flattening members, means for thereafter withdrawing the flattening members from the lining, means for then bringing the sealing members into contact with the fiattened lining end and sealing the same outside the said plates, and means for then removing the sealing members and the plates from the sealed lining end.
  • a machine according to the invention provides rapid and satisfactory flatsealing of the lining end.
  • the fiattening members which are, with advantage, naturally resilient in order not to tear the lining ends, apply tension to diametrically opposite parts of the lining end so that the lining end is stretched completely flat when the plates press the lining end between their edges, so that the lining end is flattened positively and satisfactorily. There is therefore no chance of unwanted creases existing when the seailng members subsequently operate on the end to be sealed, very near the plates.
  • the weld bead which may tend to form beside the heat-sealing zone due to liquefaction of the lining material or its coating during sealing, sets immediately because of the presence of the cooled plates, something which helps to improve weld quality.
  • FIGS. 1 and 2 are perspective views of a box end during two phases of the flattening of the box lining end;
  • FIG. 3 is a side view of a machine according to the invention.
  • FIG. 4 is an end view corresponding to FIG. 3;
  • FIG. 5 is a diagram showing the sequence and duration of the various phases during one working cycle of the machine.
  • FIGS. 6-11 are fragmentary views, to a reduced scale and in section taken on the lines VIXI respectively of FIG. 3, showing only those elements which are necessary for an understanding of how the machine operates.
  • FIGS. 1 and 2 show one end of a box suitable for closing by a machine according to the invention.
  • the box comprises a sheath of cardboard or the like having a body 1 and closure flaps 2-5, the sheath receiving a lining 6 of heat-scalable material, for instance sheet of plastics, or paper, metal foil or complex coated on the inner side with a heat-sealable lacquer or the like, the lining projecting beyond the sheath body 1.
  • a lining 6 of heat-scalable material for instance sheet of plastics, or paper, metal foil or complex coated on the inner side with a heat-sealable lacquer or the like
  • the lining projecting beyond the sheath body 1.
  • the flaps 2-5 are folded outwards as shown in FiGS. 1 and 2; this folding can be effected by any known means such as are conventional in apparatus of the general kind concerned.
  • two folding members or antennae 7, 8 movable along the central plane of the box are operated to enter the open end of the lining 6 and move apart from one another to flatten the lining end as shown in FIG. 2.
  • Two plates or strips or the like 9, it) are disposed one on either side of the lining and are reciprocated as indicated by arrows. They have a length at least equal to and preferably greater than the width of the flattened lining end.
  • the movements of the plates 9, it) and of the antennae 7, 3 are so co-ordinated that the plates close at or immediately after the time when the antennae reach their positions of maximum separation from one another.
  • the machine illustrated in FIGS. 3-11 comprises a frame 11, mounted on which are two parallel shafts 12, 13 which are disposed in spaced relationship one above another and have the main parts of the machine mounted on them.
  • the shaft 12 is borne by two bearings 14, 15 having pivotally connected to them arms 16, 17 whose free ends are biased by a tension spring 18, 19, respectively, secured to a stationary part of the frame 11, for instance, a bearing 20, 21, respectively, for the shaft 13.
  • the antennae 7, 8, which may be in the form of spring-steel wire terminating in a loop or eye or the like, are secured to the arms 16, 17.
  • the movements thereof and of the antennae 7, 8 are controlled by cams 22, 23 against which the springs 18, 19, urge rollers 24, 25 mounted on rods 26, 27 pivotally connected at places 28, 29 to the arms 16, 17.
  • the cams 22, 23 are rigidly secured to the shaft 13 which is rotated by gears 30, 31.
  • each lever 32, 33 having mounted on it a roller 34, 35, respectively, kept in contact with a cam 36, 37, respectively rigidly connected to the shaft 13.
  • Each of the levers 33, 32 comprises two arms staggered relatively to each other lengthwise of the shaft 12..
  • Two double-armed levers 38, 3% are freely rotatable on the shaft 12; one arm of each said levers carries a sealing member 4%, 41, respectively'an electrically heated jaw in this particular case-and the other arm carries a roller 42, 43, respectively, such rollers being kept in contact with earns 44, .45 rigidly connected to the shaft 13.
  • an areuate leaf spring 46 is connected at 47 to a pin rigidly secured to the lever 33 near the roller 42 while the other end of the spring 46 is connected at 48 to a pin rigidly secured to the arm 32 near the roller 34.
  • the spring lti'therefore maintains the rollers 34, 42in contact with their earns 36, 44.
  • a similar spring 49 is secured at to the arm 33 near the roller 35 and at 51 to the arm 39 near the roller 43, to keep the rollers 35, 43 i in contact with their respective earns 37, 45.
  • the levers 32, 33, 38, 39 in association with their cams and rollers, move to bring the springs 46, 49 into the respective positions 46', 4? (FIG. 4).
  • the corresponding open position of the arm 32 is shown in chain-dotted lines by the reference 32; of course the arm 39 moves'through the same angle, while the arms 33, 38 move similarly but to the opposite hand.
  • the box is brought to the apparatus in the condition shown in FIG. 1.
  • the antennae 7, 8 are moved by the springs 18, ll? after the cams 22, 23 have moved to positions, to allow such movement, into the position 7' (position shown for one of them in FIG. 3) so as to flatten the end of the lining 6, whereafter the plates 9, are
  • FIG. 5 the three circles representing the movement cycle, (inner circle) of the sealing members 40, 41, (intermediate circle) plates 7 9, 1d and (outer circle) antennae 7, 8, respectively.
  • the antennae are in the normal position at a (the full line position shown in FIG; 3), open at 1) (position shown in FIG. 2), stay open at c, and return to their normal position at d.
  • the plates 9, 10 are open at e (position in FIG. 1), close at f, stay closed at g (position shown in FIGS. 2 and 4) and re-open at h.
  • the sealing members are open at i, close at 1, stay closed at k to effect sealing (position shown in FIG. 4) and re-open at I.
  • the machine according to the invention performs in a single working cycle all the operations for flat-folding and for sealing the box lining and substantially obviates all risk of faulty welds, more particularly of microscopic channels impairing complete hermeticity of the packing.
  • the plates 9, 10 can be cooled, for instance, by-being hollow at least in the part near their support arm and by water or some other coolant flowing through them.
  • a machine for flat-sealing one end of a heat-sealable lining projecting from the body of a parallelepipedic box of cardboard or the like including two flattening members normally disposed outside the lining end and intended to be introduced therein and to be separated from each other for acting upon diametrically opposed places of the lining end until they substantiallyrflatten the latter, spaced-apartplates disposed on either'side of the lining end and intended to be moved transversely'of the plane of movement of said flattening members for pressing between them the flattened lining end along a line further away from the lining endthan the flattening members, sealing members intended to seal the flattened lining end after withdrawal of the flattening members thereof, said plates and sealing members being intended to be withdrawn from the lining end after sealing thereof, in which each plate and each sealing member is secured, respectively, to' one arm of separate two-armed levers Whose other arm has a roller, all the levers being rotatably mounted, at an intermediate place thereof, on a
  • a machine for flat-sealing one end of a heat-scalable lining projecting from the body ofa parallelepipedic box of cardboard or the like including two flattening members normally disposed outside the lining end and intended to be introduced therein and to be separated from each other for acting upon diametrically opposed places of the lining end'until they substantially flatten the latter, spaced-apart plates disposed on either side of the lining end and intended to be moved transversely of the plane of movement of said flattening members for pressing be tween them the flattened lining end along a line further away from the lining end than the flattening members, sealing members intended to seal the flattened lining end after withdrawal of the flattening members thereof, said plates and sealing members being'intended to be With- 7 drawn from the lining end after sealing thereof, in which along a central plane of the box, then sealed in.
  • sealing members comprising two-flattening members normally disposed outside the lining end, means for'introducing the flattening members into the lining end and for separating them from each other along the central plane of the box means for moving the said plates transversely of the said' central plane until the plates positively press between them the flattened lining end along'a line extending on the Whole width thereof and further away from the end edge of the lining than the flattening members, means for thereafter withdrawing the flattening members from the lining, means for then bringing the sealing members into contact with the flattened lining end and sealing the same outside the said plates and closely adjacent thereto, and means for then removing the sealing members and the plates from the sealed lining end, each said flattening member being a naturally resilient wire which terminates in a bent end.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Package Closures (AREA)
  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
US383312A 1963-07-26 1964-07-17 Machine for flat-sealing an end of a heat-sealable lining of a box of parallelepipedic shape Expired - Lifetime US3200563A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU44141 1963-07-26

Publications (1)

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US3200563A true US3200563A (en) 1965-08-17

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US383312A Expired - Lifetime US3200563A (en) 1963-07-26 1964-07-17 Machine for flat-sealing an end of a heat-sealable lining of a box of parallelepipedic shape

Country Status (7)

Country Link
US (1) US3200563A (de)
DE (1) DE1461787A1 (de)
DK (1) DK107138C (de)
GB (1) GB1079212A (de)
LU (1) LU44141A1 (de)
NL (1) NL6408478A (de)
SE (1) SE325507B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481102A (en) * 1965-12-18 1969-12-02 Hill & Dolman Eng Ltd Bag forming methods and apparatus
US3753331A (en) * 1970-04-25 1973-08-21 Ikegai Iron Works Ltd Method of and means for facilitating a sealing of end flaps of a film
US10343364B1 (en) 2013-03-15 2019-07-09 Ellis W. Davis Box gluing machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2219873B1 (de) * 1973-03-02 1976-05-21 Boracier Sa
DE3037792C2 (de) * 1980-10-07 1984-07-26 Haver & Boecker, 4740 Oelde Vorrichtung zum automatischen Transport gefüllter Säcke von einer Füllmaschine zu einer Verschließmaschine
DE3204773A1 (de) * 1982-02-11 1983-08-18 Altstädter Verpackungs-Vertriebsgesellschaft mbH, 6102 Pfungstadt Vorrichtung zum verschliessen einer fluessigkeitspackung
DE4214519A1 (de) * 1992-05-01 1993-11-04 Tetra Pak Gmbh Vorrichtung zum einfalten des bodens einer kartonpackung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415978A (en) * 1943-12-02 1947-02-18 Pneumatic Scale Corp Packaging machine
US2823503A (en) * 1956-06-29 1958-02-18 Wolf Irving Bag distending and supporting device
US2925699A (en) * 1955-04-18 1960-02-23 Ozor Louis Device for intucking the mouths of paper bags

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2415978A (en) * 1943-12-02 1947-02-18 Pneumatic Scale Corp Packaging machine
US2925699A (en) * 1955-04-18 1960-02-23 Ozor Louis Device for intucking the mouths of paper bags
US2823503A (en) * 1956-06-29 1958-02-18 Wolf Irving Bag distending and supporting device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3481102A (en) * 1965-12-18 1969-12-02 Hill & Dolman Eng Ltd Bag forming methods and apparatus
US3753331A (en) * 1970-04-25 1973-08-21 Ikegai Iron Works Ltd Method of and means for facilitating a sealing of end flaps of a film
US10343364B1 (en) 2013-03-15 2019-07-09 Ellis W. Davis Box gluing machine
US11117340B2 (en) 2013-03-15 2021-09-14 Ellis W. Davis Box gluing machine
US11820098B2 (en) 2013-03-15 2023-11-21 Ellis W. Davis Box gluing machine

Also Published As

Publication number Publication date
GB1079212A (en) 1967-08-16
NL6408478A (de) 1965-01-27
SE325507B (de) 1970-06-29
LU44141A1 (de) 1965-01-26
DE1461787A1 (de) 1969-03-06
DK107138C (da) 1967-04-24

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