WO2009133580A1 - Appareil de formation de piles de sacs en plastique - Google Patents

Appareil de formation de piles de sacs en plastique Download PDF

Info

Publication number
WO2009133580A1
WO2009133580A1 PCT/IT2009/000099 IT2009000099W WO2009133580A1 WO 2009133580 A1 WO2009133580 A1 WO 2009133580A1 IT 2009000099 W IT2009000099 W IT 2009000099W WO 2009133580 A1 WO2009133580 A1 WO 2009133580A1
Authority
WO
WIPO (PCT)
Prior art keywords
bags
needles
packs
chain
transferring
Prior art date
Application number
PCT/IT2009/000099
Other languages
English (en)
Inventor
Gianfranco Galimberti
Original Assignee
I.P.S. S.R.L. International Project Services
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
Priority claimed from ITFI20080088 external-priority patent/ITFI20080088A1/it
Priority claimed from ITFI20080087 external-priority patent/ITFI20080087A1/it
Application filed by I.P.S. S.R.L. International Project Services filed Critical I.P.S. S.R.L. International Project Services
Publication of WO2009133580A1 publication Critical patent/WO2009133580A1/fr

Links

Classifications

    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/98—Delivering in stacks or bundles
    • 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
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/92—Delivering
    • B31B50/98—Delivering in stacks or bundles
    • 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
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/98—Delivering in stacks or bundles
    • B31B70/984—Stacking bags on wicket pins

Definitions

  • the apparatus according to the present invention is of the type for forming packs of plastic bags or the like presenting holes (in particular two holes) along one edge.
  • Apparatuses are known for forming packs of plastic bags or the like provided with one or more holes (in particular two holes) along one edge, that comprise, according to a known structure, a multiple reel which presents the individual bags singularly to a transfer chain for transferring packs ⁇ f bags accumulated in needles (especially couples of needles) present in succession on the chain.
  • the object of the present invention is to solve the problems described above related to the handling of the chain conveyor so as to allow centering of the packs by means of the needles.
  • These needles can be constrained to the chain so as to be translated and / or inclined angularly relative to the chain.
  • the present invention comprises members for common engagement of the bags arranged at correspondence of the pairs of needles . .
  • engaging members which allow easy collection, transport and handling of the packs which have been formed.
  • These engaging members are suitable to follow the variation of position of the needles for inserting the bags.
  • these engaging members are also transferring members for transferring the bags. Downstream of said transferring chain a picking-up device of the engaging members is provided with the packs of bags engaged in the members, thus allowing handling of the packs.
  • the picking-up device can be designed so as to perform an active stroke for transferring the packs of bags from the transferring chain to a removing system. This picking-up device can be used for bringing the engaging members from a warehouse to the corresponding pair of needles.
  • opposite seat are defined between the needles for engaging members constituted by U - shaped members arranged in said seats.
  • each pair of needles corresponds a U - shaped member destined to engage the packs of bags which are accumulated there by means of the holes present in the same bags; these U - shaped members allow easy handling of the packs of bags.
  • adjusting means are present for adjusting the reciprocal distance of the needles so as to adapt the chain to the handling of types of bags provided with pairs of holes with different center - to - center.
  • the engaging members to be constituted by sleeves which are arranged on the needles (so as the latter result inserted in them), one for each needle, before arrangement of the sacks.
  • These sleeves present lower abutment means projecting laterally.
  • the bags are so stacked on these sleeves (one per hole); the packs formed rest on lower abutment means of the sleeves. It is therefore possible to pick up the packs by taking them from the head of the sleeves, preventing the removal thereof from the sleeves.
  • the sleeves present at the top anti - extracting means. - o -
  • these anti - removal means comprise, for each sleeve, a cap snap coupleable on the head of the sleeve and provided with a portion laterally projecting relative to the outer diameter of the sleeve that prevents in this manner the extraction of the bags from the top.
  • figure 1 shows an overall side view of the apparatus according to the present invention
  • figures 2A and 2B show a view and a section according to H-Il of figure 1 , in two variants of embodiments
  • figure 3 is a section according to Ill-Ill of figure 1
  • figure 4 is an enlarged partial view of figure 1 , illustrating a segment of the path of the transferring chain
  • figures 5 and 6 show a section according to V-V of figure 4, in two variants of embodiment
  • figures 7 and 8 show a partial side view of the transferring chain and a section according to VIII-VIII of figure 7
  • figure 9 shows a cross section of the transferring chain, in the feeding area for feeding the bags to the chain
  • figure 10 shows an individual bag combined with a stacking and transferring U - shaped member
  • figures 11 and 12 show individually a U - shaped stacking and transferring member, in side view and section according to X
  • the arrow f1 indicates an entrance path of the material M destined to the formation of bags S in plastic film; the arrow f2 indicates the welding and cutting area for forming from the material M the bags S (see figure 10) with their edge perforated with two holes F necessary for the various handling; the bags S are individually positioned on a series of at least two or more coaxial multiple arm reels 5 , suitable to receive the individual bags S; each of the bags S is held by means of suction and transferred to a position Sa (figure 1), where each subsequent bag is released due to the termination of the pneumatic retaining.
  • the released bag shall be engaged by a transferring chain 7 for horizontal transferring, which is provided, for this purpose, with a multiplicity of pairs of needles 9 and is provided with an intermittent forwarding according to the arrow f7a and with a return according to the arrow f7b; said chain 7, 9 shall stay in an intermittent stop so as to receive and accumulate on the needles 9, which are in the position 9A, a desired multiplicity of bags S, and then forward by one step in order to receive a subsequent desired multiplicity of bags S, always released in position Sa from the termination of the pneumatic retaining of the arms of the reels 5.
  • the continuous adjustment of the set of the chain conveyor 7, 8 is not necessary, and only a continuous and limited displacement - translation and / or inclination - of the two needles 9 is performed, which are temporarily in the position 9a so as to assume a position aligned with the two holes F of the bag which is about to be released from the position Sa where it ceases to be held through suction by the arms of the reels 5.
  • the needles 9 which are instantaneously in the position 9A can be moved through adequate servocontrols - with optical lights or other suitable devices - simply by exploiting the possibility of displacement of the needles 9 in position 9A, with movements - translation and / or inclination relative to the chain 7 - so as to guarantee a position thereof oriented below the holes F of the bag S which is about to be released from its position Sa due to the termination of the pneumatic retaining through the reels 5.
  • the packs Sp of bags S are subsequently transferred according to the arrow f7a from the chain 7, 9, towards a pick up station for taking the packs of bags.
  • the collection can be anyway realized, also manually, as the frequency of arrival of the subsequent packs of bags which arrive transferred by the chain 7 is limited and each stop of the chain 7 is not too much protracted.
  • the bags of more subsequent packs of bags are _ _
  • Each of these engaging members is constituted simply by a U - shaped engaging member 21 , and in particular a U - shaped bar 21 susceptible to limited elastic deformations.
  • This U - shaped engaging member 21 is susceptible (see also figures 11 and 12) to be received - inserted with a limited elastic return of the arms 21A - between opposite grooves 9B obtained in the two needles 9.
  • These U - shaped engaging members 21 are useful also to handle the plurality of bags S as a whole, which are engaged to a same member 21.
  • These U - shaped elastic member 21 can be advantageously prolonged so as to project beyond the needles 9A and so as they can be easily manipulated manually or also through automation, both for insertion between the needles 9 and for picking-up from said needles.
  • a station can be provided for manual picking-up of the members 21 (and of the bags S engaged with them), or a specific station 30 can be provided for picking up the arriving bags Sp, as that illustrated in figures 1 and 2A.
  • moving means are provided for moving the U - shaped members both individually and with the packs of bags inserted, and in particular:
  • the chain 7 places the needles 9 and the U - shaped members 21 below the carriage 37 and its gripper 39, in such conditions so that the gripper 39 can grip the ends of the U - shaped member 21, to which a pack of bags Sp is engaged, which have reached the position Spz (dashed line in figure 1). Therefore, this pack of bags can be _ _ picked up from the carriage 37, 39 and is transferred from this carriage 37 (rolling along the guide 35) till to put it on the carrier 33 as indicated in Spt (three intermediate positions of this transfer should be noted in Spn). At this point, the carriage 37 can return to the start point. According to a possible variant (see figure 2B) on the guide 135
  • a carriage 137 (equivalent to the carriage 37) in addition to a carriage 137 (equivalent to the carriage 37) also a second carriage 237 is provided; the carriage 37 picks up a U - shaped bar from the store 231 and present it in position U 0 to feed it to the chain 7 which transfers it according to the arrow f7b; the carriage 137 is suitable to transfer a U - shaped bar with the pack of bags Spm from the position U 0 till to deposit the pack of bags Spn in the position Spt on the carrier 33 and farther.
  • the movements of the two carriages 237 and 137 are suitably synchronized for the respective operations to be performed.
  • the U - shaped members are automatically inserted in their seats on the chain 7 as those previously used for the formation and the picking-up of the pack of bags are unloaded.
  • the U - shaped engaging members are transferring members for transferring the packs of bags.
  • the engaging and transferring members are formed by sleeves 321 (i.e. tubular bodies), which are arranged on the needles 9 (so that they are inserted on them), one for each needle 9, before arranging the bags.
  • sleeves 321 i.e. tubular bodies
  • abutment members are provided, projecting laterally, such as for example a flange 340.
  • the bags are thus stacked in such a way that the sleeves 321 are inserted in the holes of the bags.
  • the first stacked bag abuts on the lower flanges 340 of the pair of sleeves 321.
  • the pack of bags Sp is supported by the flanges 340 of the sleeves arranged on the two corresponding needles, and it is therefore possible to handle the pack by acting on the two sleeves.
  • a U - shaped engaging member of given dimensions does not allow to vary its lateral dimension to be adapted to center - to - center of needles of different type, unless a complex structure thereof.
  • An alternative is the arrangement of U - shaped members of different lateral dimensions. This problem is solved by using sleeves, which do not present constraints in lateral direction.
  • the sleeves 321 present at the top anti - removal means, such as in this example for each sleeve 321 a cap 341 which can be snap coupled on a nip defined on the outer diameter of the head of the sleeve and provided with a portion 341A laterally projecting relative to the outer diameter of the sleeve; this portion 341A prevents the bags from slipping out from the head of the sleeves.
  • a cap 341 which can be snap coupled on a nip defined on the outer diameter of the head of the sleeve and provided with a portion 341A laterally projecting relative to the outer diameter of the sleeve; this portion 341A prevents the bags from slipping out from the head of the sleeves.
  • this cap (not shown in the figures) provides that the snap coupling occurs through coupling of the stem of the cap with the inner diameter of the head portion of the sleeve.
  • a pick - up station 330 is provided for the packs of bags Sp, arranged at the end of the translation stroke of the needles with sleeves and corresponding packs.
  • a store 331 for sleeves 321 is provided (see figures 15 and 16), and moving means of pairs of sleeves, both singularly and with packs of bags inserted on the sleeves, which comprise an actuator of vertical translation 342 for a gripping group 343 of the sleeves 321.
  • This actuator is arranged on a carriage 337 sliding along a guide 335 transverse to the chain 7.
  • the gripping group 343 provides two grippers 339, whose distance can be adjusted.
  • these grippers 339 are arranged on a horizontal bar
  • the pair of grippers 339 can be replaced also with an individual gripper of suitable width, which acts contemporaneously on both the sleeves.
  • the gripping group 343 can move for example towards the store / warehouse 331 of sleeves 321. The grippers are lowered until the _ _
  • the sleeves can be also used in apparatuses in which the distances of the needles in respective pairs can not be adjusted.
  • the particular embodiments of the engaging members U - shaped members and sleeves
  • the particular embodiments of the engaging members can be used also with apparatuses of the traditional type, where the adjustment of the position of the needles in the area Sa of receiving the bags occur by moving all the set of the chain conveyor 7, 8. It is understood that what is illustrated purely represents possible non- limiting embodiments of the invention, which may vary in forms and arrangements without departing from the scope of the concept on which the invention is based. Any reference numbers in the appended claims are provided for the sole purpose of facilitating the reading thereof in the light of the description hereinbefore and the accompanying drawings and do not in any way limit the scope of protection of the present invention.

Abstract

La présente invention se rapporte à un appareil de formation de piles de sacs en plastique (S) ou similaires présentant des trous – en particulier deux trous (F) – le long d’un bord. Cet appareil comprend une bobine multiple qui présente les sacs singulièrement sur une chaîne de transfert (7, 9) servant à transférer des piles de sacs (Sp) accumulés sur des aiguilles (9) – individuelles ou en paires particulières d’aiguilles – présentes les unes à la suite des autres sur la chaîne (7). Sur cette dernière, les aiguilles individuelles (9) sont montées d’une manière telle que leur position peut être ajustée (9A), de manière à garantir la prise des sacs qu’elles doivent réaliser pour le transfert également en cas de déplacement latéral du sac.
PCT/IT2009/000099 2008-04-28 2009-03-17 Appareil de formation de piles de sacs en plastique WO2009133580A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITFI20080088 ITFI20080088A1 (it) 2008-04-28 2008-04-28 Attrezzatura per la manipolazione di pacchi di sacchi in plastica o simili
ITFI20080087 ITFI20080087A1 (it) 2008-04-28 2008-04-28 "attrezzatura per la formazione di pacchi di sacchi in plastica o simili presentanti fori - in specie due fori"
ITFI2008A000087 2008-04-28
ITFI2008A000088 2008-04-28

Publications (1)

Publication Number Publication Date
WO2009133580A1 true WO2009133580A1 (fr) 2009-11-05

Family

ID=40886571

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2009/000099 WO2009133580A1 (fr) 2008-04-28 2009-03-17 Appareil de formation de piles de sacs en plastique

Country Status (1)

Country Link
WO (1) WO2009133580A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9079725B2 (en) 2010-10-15 2015-07-14 I.P.S. S.R.L. International Project Services Device for forming packs of plastic bags

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252233A (en) * 1979-06-04 1981-02-24 Joice Richard L Plastic bag-wicketing pin adjustment apparatus
US5667468A (en) * 1994-11-10 1997-09-16 Battenfeld Gloucester Engineering Co., Inc. Screw adjustable wicket pins
US5746569A (en) * 1996-02-13 1998-05-05 Amplas, Inc. Bag forming machine having adjustable support structure for paired work elements
US6149377A (en) * 1999-04-07 2000-11-21 The Hudson-Sharp Machine Co. Conveyor apparatus for conveying stacks of articles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252233A (en) * 1979-06-04 1981-02-24 Joice Richard L Plastic bag-wicketing pin adjustment apparatus
US5667468A (en) * 1994-11-10 1997-09-16 Battenfeld Gloucester Engineering Co., Inc. Screw adjustable wicket pins
US5746569A (en) * 1996-02-13 1998-05-05 Amplas, Inc. Bag forming machine having adjustable support structure for paired work elements
US6149377A (en) * 1999-04-07 2000-11-21 The Hudson-Sharp Machine Co. Conveyor apparatus for conveying stacks of articles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9079725B2 (en) 2010-10-15 2015-07-14 I.P.S. S.R.L. International Project Services Device for forming packs of plastic bags

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