EP0493332A1 - Automatische Maschine zur Herstellung, zum Befüllen und zum Versiegeln von Kunststoff-Seitenfaltenbeuteln, insbesondere für das Verpacken von inerten Materialien - Google Patents

Automatische Maschine zur Herstellung, zum Befüllen und zum Versiegeln von Kunststoff-Seitenfaltenbeuteln, insbesondere für das Verpacken von inerten Materialien Download PDF

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Publication number
EP0493332A1
EP0493332A1 EP91830546A EP91830546A EP0493332A1 EP 0493332 A1 EP0493332 A1 EP 0493332A1 EP 91830546 A EP91830546 A EP 91830546A EP 91830546 A EP91830546 A EP 91830546A EP 0493332 A1 EP0493332 A1 EP 0493332A1
Authority
EP
European Patent Office
Prior art keywords
station
bag
bags
heat seal
conveyor
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.)
Withdrawn
Application number
EP91830546A
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English (en)
French (fr)
Inventor
Angelo Forni
Vittorio Tassoni
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.)
COMES Srl
Original Assignee
COMES Srl
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 COMES Srl filed Critical COMES Srl
Publication of EP0493332A1 publication Critical patent/EP0493332A1/de
Withdrawn legal-status Critical Current

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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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/02—Machines characterised by the incorporation of means for making the containers or receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/002—Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents

Definitions

  • the invention relates to an automatic machine for fashioning, filling and sealing plastic bags with side gussets, in particular for packaging inert materials.
  • This second bagging method has found favour with manufacturers to some extent, given the advantage that it dispenses with initial operations limited to part-forming and stacking a supply of bags, and thus avoids a further step of transferring the bags to a magazine for subsequent release one by one.
  • This method betrays the drawback that the two rolls of strip material must necessarily be of dissimilar width; also, there is the need for special means by which to produce the 'S' or 'Z' folds in the wider strip, and means by which to hold the folds steady during the subsequent steps of forming and filling the bag.
  • the object of the present invention is to overcome the drawbacks mentioned above through the provision of an automatic machine equipped, as recited in the appended claims, with a plurality of work stations at which the bags are fashioned with fully formed side gussets, filled and then closed, respectively; a machine, moreover, by means of which bags can be manufactured from two strips of plastic film having identical dimensions.
  • no pause effected by the machine in the course of the overall packaging cycle will be of duration greater than the longest discrete step within the cycle, for example the time taken to fill one bag; thus, one has no accumulation of dead time or pause components effectively governing the correct execution of the different operations which make up one cycle.
  • the gusset folds are formed after the longitudinal edges of the two strips of film have been joined and sealed, and immediately prior to the steps whereby the bottom and the top ends of the bag are sealed. Accordingly, the means by which the bags are guided toward the filling station can be exploited additionally as guide means by which to hold the gusset folds correctly in position until sealed at the bottom and the top of the bag, and the need for further guide means is thus avoided.
  • a further advantage of the machine according to the invention consists in the fact that the mouth of the bag is created by sealing together the portions of the strip incorporating the gusset folds on each side, thereby avoiding the risk that the material on either side of the mouth will be torn during the filling operation by the grippers which hold the bag in position; instead, the bags are considerably strengthened in these same areas. Similarly, there is no need for the relative gusseted corners to be folded inwards prior to sealing the mouth of the bag, as is the case in conventional machines.
  • the machine according to the invention exhibits a frame 1 of which the top part, seen from the side, affords two brackets 2 carrying respective rolls 3 of plastic film material identical in width; the strips are unwound from the rolls 3, passed around a plurality of guide and tension rollers 4 and directed into a first work station of the machine, as described more fully in due course.
  • 5 denotes a runout conveyor positioned beneath the final work station of the machine, by which the filled and finished bags are ultimately removed.
  • the machine Viewed in the front elevation of figs 2 and 3, the machine exhibits substantially five work stations denoted S1, S2, S3, S4 and S5, arranged in series, at which the following respective operations are carried out:
  • the first station S1 of the machine essentially comprises a first heat seal device 7 consisting in two pairs of looped pinch belts 8 between which the two strips of film uncoiling from the rolls 3 are directed ultimately following their passage through the rollers 4.
  • the two pairs of belts 8 are spaced apart one from another and positioned along the edges of the strips of film, adjacent to relative pairs of heat seal plates 9 of which the purpose is to join the stretch of the longitudinal edges of the two strips pinched between the belts, during the pause between the indexed steps of the machine, in such a way that the sirips are joined to form a tubular sheath.
  • the support 10 denotes a support located between the pairs of belts 8, aligned with the median longitudinal axis of the strips (see fig 6), which remains interposed between the strips when joined along the edges by the heat seal plates 9.
  • the support 10 is suspended from a cross beam 11 fastened to the top of the frame 1 and carries a pair of essentially U-shaped folding dies 12 disposed in alignment with the feed direction followed by the strips; the dies 12 are designed to operate in conjunction with a pair of folders 13 positioned to penetrate the U profile and thus fold the sealed edges of the plastic film in toward one another, forming a gusset on either side of the sheath.
  • the sheath is formed as shown in fig 7, where: sections a and b illustrate two possible methods of joining the longitudinal edges (the former with a folded seam, the latter plain) and section c shows the step of forming the gussets, effected by the dies 12 and folders 13.
  • Each die 12 is supported from above by a pair of parallelogram-linked rods 14 attached by one end to the die and by the other to the support 10, and at bottom by an arm 15 of which one end is pivotably anchored to the die 12 and the other to the head 16 of a threaded rod 17 carried slidably, though not rotatably, within the support 10.
  • the top end of the threaded rod 17 engages in a threaded bush 18 mounted rotatably to and in captive association with the cross beam 11, the bush 18 in turn being connected with a bevel gear pair 19 and a shaft 20 in such a manner that it can be rotated in either direction to raise or lower the rod 17.
  • an upward or downward movement of the rod 17 has the effect of drawing the dies 12 farther apart or closer together radially, in relation to the tubular sheath, and therefore of altering the depth to which the sealed edges are folded back into the sheath.
  • the position of the folders 13 is adjusted to suit that of the dies 12 by turning handwheels 22 (see fig 6) coupled to corresponding threaded spindles (not illustrated) which are rotatable in threaded bushes carried by brackets fixed to the frame 1 of the machine and supporting the folders 13.
  • the tubular sheath thus joined and folded is taken up between a first pair of pinch rollers 23, which compress and compact the gussets, and conveyed into a second heat seal device 24.
  • the portion of the sheath beyond the second heat seal device 24 emerges with: the filler mouth fashioned in a first bag A about to enter the second station S2; a seal effected across the bottom of a second bag B, still in formation; and a transverse cut made across the width of the sheath, by which the mouth of the first bag A is separated from the bottom of the second bag B.
  • the second heat seal device 24 is not described in detail, being conventional in embodiment with heat seal plates disposed on either side of a blade by which the aforesaid transverse cut is effected.
  • the lower plates 25 of the second heat seal device 24 will be shortened, according to the invention, to engage only the outermost portion on either side of the emerging bag in such a way that when heat is applied, the mouth proper can be left open by uniting only those parts folded inward previously to form the two gussets.
  • the mouth proper can be left open by uniting only those parts folded inward previously to form the two gussets.
  • the profile of the tubular sheath substantially at its passage through the first pinch rollers 23 is as in section d of fig 7, whilst that of the mouth of a bag A on emerging from the second heat seal device 24 is as in section e of fig 7.
  • the bags are taken up between second pinch rollers 26 and then carried by conveyor means 27 (see fig 4), singly and in succession, through the successive work stations S2, S3, S4 and S5.
  • the conveyor means 27 occupy the plane denoted C-C in fig 2, and consist in pairs of chain loops 28, 29, 30, 31 and 32 each affording mutually opposed conveying branches disposed parallel with the path followed by the bags A.
  • Each such chain loop is set in motion by a drive wheel 33 and trained around return wheels 34 mounted directly or indirectly to a frame carried by the bed of the machine.
  • the wheels 33 and 34 of the chain loops denoted 28 (station S1), 30 (station S3) and 32 (station S5) are mounted to slides 35 (fig 1) that permit of drawing the relative pairs of chains together into a position whereby the bags between the conveying branches are carried forward, or of spreading the chains apart, accordingly, during the following steps:
  • the drive wheels 33 might be connected mechanically in series by way of right angle drive couplings and cardan shafts, and set in rotation thus by a single motor not illustrated in the drawings.
  • Fig 5 illustrates further conveyor means extending from station S3 to S5 and operating in conjunction with the conveyor means 27 described above, which also afford support to the filled bags; the bags may be of considerable weight, in effect, and need to rest on a base when passing through the various work stations.
  • the conveyor and support means in question which occupy the plane denoted D-D in fig 1, comprise a belt loop 45 tensioned around a pair of pulleys 36, one of which power driven by a chain looped around a coupling denoted 37.
  • the coupling 37 is connected through a cardan shaft 38 to the live shaft 39 of one of the drive wheels 33 of the chain loops 29 operating at the work station denoted S2.
  • the final station S5 is equipped further with a plurality of rollers 41 set in rotation by a chain take-off from the driving pulley 36 of the belt loop 45.
  • the conveyor means denoted 45 and 42 are carried by a frame 46 embodied independently of the machine bed, which can be adjusted for height by means of a geared motor 47 coupled mechanically to a threaded rod 48 inserted in a threaded bush associated with the frame.
  • a geared motor 47 coupled mechanically to a threaded rod 48 inserted in a threaded bush associated with the frame.
  • the first chain loops 28 are drawn together, thus initiating the transfer of the bag from station S1 to station S2.
  • the conveyor means 27, 41, 42 and 5 cease movement, the first chain loops 28 are spread apart, and the first and second pairs of pinch rollers 23 and 26 are drawn together in such a way as to advance the tubular sheath; broadly speaking, activation of the various devices of the first station S1 is synchronized in such a way that a new bag A emerges from the second heat seal device 24 with each step indexed.
  • a motorized vibrator 40 is activated in such a way as to agitate the belt 45 supporting the bottom of the bag; the contents of the bag are thus compacted and the filling operations optimized.
  • a third heat seal device (conventional, therefore not illustrated) operates at this same station S4 to close up the filler mouth.
  • the machine indexes another step, and the filled and sealed bag A is transferred from station S4 to station S5 by the combined action of the relative chain loops 31 and 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP91830546A 1990-12-21 1991-12-06 Automatische Maschine zur Herstellung, zum Befüllen und zum Versiegeln von Kunststoff-Seitenfaltenbeuteln, insbesondere für das Verpacken von inerten Materialien Withdrawn EP0493332A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT378390 1990-12-21
IT00378390A IT1242619B (it) 1990-12-21 1990-12-21 Macchina automatica per la realizzazione, il riempimento e la chiusuradi sacchi di plastica con fianchi a soffietto, in particolare per il confezionamento di materiali inerti.

Publications (1)

Publication Number Publication Date
EP0493332A1 true EP0493332A1 (de) 1992-07-01

Family

ID=11111701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91830546A Withdrawn EP0493332A1 (de) 1990-12-21 1991-12-06 Automatische Maschine zur Herstellung, zum Befüllen und zum Versiegeln von Kunststoff-Seitenfaltenbeuteln, insbesondere für das Verpacken von inerten Materialien

Country Status (2)

Country Link
EP (1) EP0493332A1 (de)
IT (1) IT1242619B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997042084A1 (es) * 1996-05-08 1997-11-13 Payper, S.A. Mejoras en los sistemas de evacuacion de sacos en maquinas ensacadoras
ES2128932A1 (es) * 1996-05-08 1999-05-16 Payper Sa Procedimiento de evacuacion de sacos de una maquina autonoma de ensac ado.
ES2131441A1 (es) * 1996-05-08 1999-07-16 Payper Sa Mecanismo soldador para reforzamiento de sacos, en maquinas autonomas de ensacado.
ES2133217A1 (es) * 1996-05-08 1999-09-01 Payper Sa Mecanismo de regulacion en altura para la cinta de elevacion, en maquinas de ensacado.
WO2006130008A2 (en) 2005-06-02 2006-12-07 Smq Group B.V. Method of manufacturing a foldable bag and a foldable bag
US7980410B2 (en) 2002-09-05 2011-07-19 Smq Group B.V. Foldable bag and combination of a container and a bag and method for the use of this combination
CN108973239A (zh) * 2018-09-28 2018-12-11 温州优比科实业有限公司 一种托底机构
US10377549B2 (en) 2009-04-29 2019-08-13 Scholle Ipn Corporation Foldable bag and a method of manufacturing a foldable bag

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114030229A (zh) * 2021-11-25 2022-02-11 四川天星智能包装股份有限公司 一种制造抑菌果蔬套袋的设备及其制造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676442A (en) * 1948-10-19 1954-04-27 Simplex Packaging Machinery In Bag filling and closing machine
GB944776A (en) * 1961-05-04 1963-12-18 Hesser Ag Maschf Bag-forming apparatus
US3372625A (en) * 1965-05-24 1968-03-12 Dow Chemical Co External gusseting process
FR2309404A1 (fr) * 1975-04-30 1976-11-26 Haver & Boecker Machine pour l'emballage de produits en vrac dans des sacs a soufflets lateraux en matiere plastique
EP0397099A1 (de) * 1989-05-10 1990-11-14 B.L. MACCHINE AUTOMATICHE S.p.A. Verfahren und Vorrichtung zur Herstellung von Säcken

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676442A (en) * 1948-10-19 1954-04-27 Simplex Packaging Machinery In Bag filling and closing machine
GB944776A (en) * 1961-05-04 1963-12-18 Hesser Ag Maschf Bag-forming apparatus
US3372625A (en) * 1965-05-24 1968-03-12 Dow Chemical Co External gusseting process
FR2309404A1 (fr) * 1975-04-30 1976-11-26 Haver & Boecker Machine pour l'emballage de produits en vrac dans des sacs a soufflets lateraux en matiere plastique
EP0397099A1 (de) * 1989-05-10 1990-11-14 B.L. MACCHINE AUTOMATICHE S.p.A. Verfahren und Vorrichtung zur Herstellung von Säcken

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997042084A1 (es) * 1996-05-08 1997-11-13 Payper, S.A. Mejoras en los sistemas de evacuacion de sacos en maquinas ensacadoras
ES2128932A1 (es) * 1996-05-08 1999-05-16 Payper Sa Procedimiento de evacuacion de sacos de una maquina autonoma de ensac ado.
ES2131441A1 (es) * 1996-05-08 1999-07-16 Payper Sa Mecanismo soldador para reforzamiento de sacos, en maquinas autonomas de ensacado.
ES2133217A1 (es) * 1996-05-08 1999-09-01 Payper Sa Mecanismo de regulacion en altura para la cinta de elevacion, en maquinas de ensacado.
US7980410B2 (en) 2002-09-05 2011-07-19 Smq Group B.V. Foldable bag and combination of a container and a bag and method for the use of this combination
WO2006130008A2 (en) 2005-06-02 2006-12-07 Smq Group B.V. Method of manufacturing a foldable bag and a foldable bag
WO2006130008A3 (en) * 2005-06-02 2007-04-05 Smq Group B V Method of manufacturing a foldable bag and a foldable bag
CN101208246B (zh) * 2005-06-02 2011-02-02 Smq集团有限公司 制造折叠袋的方法和折叠袋
US9278496B2 (en) 2005-06-02 2016-03-08 Scholle Corporation Method of manufacturing a foldable bag and a foldable bag
US10377549B2 (en) 2009-04-29 2019-08-13 Scholle Ipn Corporation Foldable bag and a method of manufacturing a foldable bag
CN108973239A (zh) * 2018-09-28 2018-12-11 温州优比科实业有限公司 一种托底机构

Also Published As

Publication number Publication date
IT1242619B (it) 1994-05-16
IT9003783A1 (it) 1992-06-22
IT9003783A0 (it) 1990-12-21

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