EP0773867A1 - Dispositif et procede pour la realisation d'une caisse a partir d'un flan - Google Patents
Dispositif et procede pour la realisation d'une caisse a partir d'un flanInfo
- Publication number
- EP0773867A1 EP0773867A1 EP95927749A EP95927749A EP0773867A1 EP 0773867 A1 EP0773867 A1 EP 0773867A1 EP 95927749 A EP95927749 A EP 95927749A EP 95927749 A EP95927749 A EP 95927749A EP 0773867 A1 EP0773867 A1 EP 0773867A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mandrel
- blank
- folding
- folding mandrel
- flaps
- 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
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
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
-
- 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
- B31B50/26—Folding sheets, blanks or webs
- B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms
Definitions
- the present invention relates to a device for producing a box from a blank of sheet material comprising a series of rectangular flaps connected to each other by first fold lines parallel to each other, comprising an intermediate flap , and a first set of lateral flaps arranged on one side of said series of flaps, connected thereto by second fold lines perpendicular to the first fold lines and intended to form at least partially the bottom of the box, the device being of the type comprising means for storing blanks in stacks, a pre-folding mandrel disposed on the outlet of the storage means, gluing means and means for transferring the blank thus pre-folded to a definitive folding mandrel.
- the invention also relates to a method for producing a cash register in particular using a device of the type defined above.
- This device has drawbacks.
- the transfer of the pre-wound blank around the mandrel involves risks of rearing and deformation of the blank.
- the gluing precision depends on the tightening on the mandrel, and the folding of the flaps used does not make it possible to obtain a body that is perfectly squared repeatedly.
- the present invention aims to provide a method and a device of the type defined above, better meeting those previously known to the requirements of practice, in particular in that it makes it possible to produce a perfectly squared box, at high speed, and this easy to implement.
- the invention essentially proposes a device for producing a box from a blank of sheet material comprising a series of rectangular flaps connected to each other by first fold lines parallel to each other, comprising an intermediate flap, and a first set of lateral flaps arranged on one side of said series of flaps, connected thereto by second fold lines and intended to form at least partially the bottom of the box, said device comprising : means for storing several blanks in a stack,
- pre-folding mandrel disposed on the outlet of the storage means of said blanks and associated with pre-folding means, means for transferring the blank thus pre-folded from the pre-folding mandrel to a definitive folding mandrel,
- the device comprises means for pressing the intermediate flap of the blank onto the underside of the definitive folding mandrel.
- the plating means consist of profiles, blades or the like arranged to progressively compress elastically the intermediate flap of the blank against the underside of the final folding mandrel during transfer;
- the plating means comprise means for supporting the intermediate flap at a distance from the folding mandrel and means arranged to progressively bring closer and to press said intermediate flap on the underside of the final folding mandrel;
- the support means consist of a movable plate;
- the pre-folding mandrel is of section having a shape different from that of the definitive folding mandrel; the pre-folding mandrel has a rectangular section and the final folding mandrel has an octagonal section;
- the means for gripping and moving said blanks towards the pre-folding mandrel comprise side arms for gripping by blank suction cup, located outside and pivoting on either side of the pre-folding mandrel, and suction means for taking up said blank by means of said pre-folding mandrel, said suction-taking means being associated with the means for moving the pre-folded blank, from the pre-folding mandrel to the folding mandrel;
- the device comprises, at the level of the final folding mandrel, means for intermediate folding of the bottom flaps before pressurizing on the one hand flaps intended to form the side walls, and on the other hand flaps intended to form said bottom ;
- the device includes a synchronous system for plating the bottom on the final folding mandrel;
- the pre-folding mandrel is arranged directly above the outlet of the blank storage means; - The folding mandrel is of different section between a first pre-folding position and a second position for forming the box.
- the invention also provides a method for producing a box from a blank of sheet material comprising a series of rectangular flaps connected to each other by first fold lines parallel to each other, comprising a flap intermediate and a first set of lateral flaps arranged on one side of said series of flaps, connected thereto by second fold lines perpendicular to the first fold lines and intended to form at least partially the bottom of the body, process in which:
- the blank thus pre-folded is transferred from the pre-folding mandrel to a definitive folding mandrel
- the blank is glued during the transfer, - and the blank is wrapped around said definitive folding mandrel comprising a lower face, characterized in that, during the winding of said blank around the mandrel, the intermediate flap of the blank is pressed onto the underside of the final folding mandrel.
- the method is characterized in that, in order to press said blank, the intermediate flap of the blank is progressively compressed elastically against the underside of the final folding mandrel during transfer.
- the method is characterized in that, in order to press the intermediate flap at the level of the folding mandrel, said intermediate flap is progressively brought closer to the underside of the definitive folding mandrel against which it comes to bear entirely at the end of plating, by means of a movable plate.
- Figure 1 is a schematic side elevation view of an embodiment of the device according to the invention.
- Figure 2 is a schematic partial side view of the device of Figure 1 after movement and formation of the box around the final folding mandrel.
- Figure 3 is a sectional view along III-III of Figure 1 showing more particularly the pre-folding mandrel.
- FIGS 4 to 10 schematically show in cross section, at the level of the final folding mandrel, the formation of the box produced according to the embodiment of the invention more particularly described here.
- Figures 1 and 2 schematically show a device 1 for the production of a box 2 from a blank 3 (in phantom in Figure 1) of sheet material comprising a series of rectangular flaps 4 connected to each other by first fold lines 5 parallel to each other, comprising an intermediate flap, and a first set of lateral flaps 6 arranged on one side of the series of flaps, connected to the latter by second fold lines 7 and intended to form at least partially the bottom of the body.
- the device 1 comprises a magazine 8 for supplying horizontal blanks or flat blanks comprising a forklift 9 of the stack 10 of blanks, kept at constant level during unstacking. Means 17 for precise positioning and setting of the blanks in xy are provided. At the end of each stack, it is replaced by a next stack 12, waiting on rollers 13, and suitable for being pushed on the forklift which is lowered for this purpose.
- the unstacking is done directly above the stack 10 thanks to six or eight gripping suction cups, namely on the one hand two suction cups 14, respectively secured to two lateral arms 15, arranged on either side of the pre-folding mandrel 16 and arranged to take a first position 17, for gripping by suction of the cutout from above 18, a second position 19, for leveling the cutout horizontally substantially under said mandrel, and a third position 20 for release of the arms upwards, for example using a series 21 of pneumatic or electric articulated jacks, and on the other hand one or two series of two articulated suction cups 22, for resumption of cutting, disposed through the mandrel 16, axially with respect thereto and integral with the carriage 23 for transferring the pre-folded blank, over at least part of the path, towards the mandrel 24 for definite folding f (see figure 2).
- the carriage 23, integral with the suction cups 22 is for example actuated by an articulated assembly 25 comprising an arm 26 actuated by a rod 27, the arm being mounted so as to pivot about a transverse horizontal axis 28 fixed at one of its ends.
- the arm 26 comprises at its other end an articulated rod 29, one end of which is pivotally mounted on the said other end of the arm 26 and the other end 30 is on the one hand guided horizontally by a rail.
- horizontal guide disposed parallel to the mandrels, and on the other hand movable in rotation relative to a part 31 secured to the carriage 23, said part being provided with a pawl pawl 32 arranged to come into contact with the rear part of the blank 3.
- Means 33 for pre-folding or at least partially winding the blank on the mandrel 16 comprising arms 34, suitable for compressing vertically on the mandrel 16 the two longitudinal flaps located on either side of the lower intermediate flap (see also figure 3).
- the arms are for example articulated around an axis 35 and movable parallel to the longitudinal axis of the mandrel between a retracted position, set back relative to the blank, and an active position for compressing the flaps against the mandrel.
- the pre-folding mandrel is of rectangular section, having a recessed longitudinal central part, for passage of the transfer carriage 23 equipped in the lower part of the central suction cups 22 between the pre-folding position 36 (see figure 2) and the folding position 37.
- the mandrel 16 is for example constituted by four horizontal, metallic bars 16 ', rectangular rectangular, forming the four corners of the mandrel.
- the device 1 further comprises plating means 38 comprising a movable plate 39 for plating the intermediate flap 40 of the pre-folded blank on the underside 41 hollowed out of the mandrel 24 for final folding, gluing means 42 comprising for example nozzles injection for application of hot glue known under the English name of "hot melt", and / or cold glue injection nozzles known to those skilled in the art, disposed on the path between the pre-folding mandrel 16 and the folding mandrel 24 located in the horizontal extension of each other, the pre-folding mandrel therefore transforming into a folding mandrel of smaller cross section in the embodiment more particularly described here.
- plating means 38 comprising a movable plate 39 for plating the intermediate flap 40 of the pre-folded blank on the underside 41 hollowed out of the mandrel 24 for final folding
- gluing means 42 comprising for example nozzles injection for application of hot glue known under the English name of "hot melt”, and / or cold glue injection nozzles known
- the blank 3 pre-folded in a U on the pre-folding mandrel 16 and which is transported via the carriage 23 does not undergo, during transport between the mandrel 16 and the mandrel 24, significant friction resistance due to the smaller cross section of the second mandrel, a gap between the transfer device and the pre-folding mandrel being formed with a value greater than the thickness of the blank material.
- the blank is transferred by a vacuum system (suction cup) and a mechanical pusher, to be permanently pressed onto the surface of the mandrel.
- a vacuum system suction cup
- a mechanical pusher to be permanently pressed onto the surface of the mandrel.
- Guide rails are also provided, the assembly being arranged so that it produces only rolling friction during the transfer process.
- the device 1 also comprises means 43 for folding the flaps 6 intended to form the bottom of the package.
- These means 43 include push cylinders 44, a closing plate 45 for example actuated by a cam device 46 between a position in horizontal withdrawal, and a position for pressing the bottom on the mandrel, which has a face end 47 suitable for serving as a support to support the forces during pressurization for bonding the bottom.
- the device 46 also makes it possible to actuate the carriage 23, via the rod 27, at the same time as the plate 45, which allows perfect mechanical repeatability and therefore very high precision, the movements being mechanically linked as will be described below.
- the end 48 of the rod 27, opposite the arm 26 is fixed in rotation to a vertex 49 of a triangle 50, movable in rotation around a transverse horizontal axis 51 located at another vertex and integral with the device chassis 1.
- the third apex 52 is in turn integral in rotation with a rod 53 fixed at its other end to a movable arm 54, integral with a cam 55 via a roller 56 between a low position where the carriage 23 is at the folding station , and a high position where the carriage is at the pre-folding station.
- the plate 45 has, in turn, its position controlled by the cam 57 via a roller 59 fixed on the middle part of an arm 60, one end is fixed to the frame 61 of the device 1 and the other is secured to a rod 62 for controlling the plate 45, a pneumatic cylinder 58 acting on an articulated rod itself secured to a rod whose other end is secured to the plate.
- the plate 45 is therefore movable between a vertical position and a horizontal position, according to a determined mechanical time diagram, as a function of the position of the carriage 23.
- the folding mandrel 24 is of octagonal section, having cut corners 64, and a horizontal lower face 65, the plating means 38 comprising a plate 39 of shape complementary to the lower part of the mandrel.
- the lower face 65 can for example be hollowed out or be presented in any other equivalent way for the skilled person.
- the folding mandrel can be, similarly to the pre-folding mandrel, formed by four profiled bars, parallel and horizontal, metallic, forming the four cut corners of the mandrel.
- the preformed U-shaped blank 3 on the pre-folding mandrel is guided by lateral rails to the folding station, a station at which its intermediate flap 66 is located at a distance from the bottom of the plate 39 (see FIG. 4).
- the plate 39 of the intermediate flap 66 of the blank is brought closer (see FIG. 5), for example via a jack hydraulic 67 by pressing said flap against the mandrel.
- the cut corners of the body are thus pressed onto the cut corners of the mandrel in a single vertical movement from bottom to top.
- two lateral jacks of complementary shape to the cut corners can be provided for pressing the intermediate flap on the underside of the mandrel by simply compressing the cut corners framing the intermediate flap on the cut corners opposite screw of the folding mandrel, by a vertical, oblique or lateral movement of said cylinders.
- the side flaps 68 are thus brought closer to the mandrel with which they are therefore in contact, the pusher fingers 44, also coming to complete this shaping.
- a tab 69 (FIG. 6), for example actuated by a jack 70, then presses the upper flap
- the tongue 72 also being applied by a piece 73 to the upper cut corner 74.
- the invention is not limited to the embodiment more particularly described. On the contrary, it embraces all variants, and in particular those where the folding and pre-folding means are actuated differently, for example by pneumatic, electric or hydraulic means slaved to each other by a programmable automaton, rather than by a system of cams.
- the plating means on the folding mandrel can be different, the main thing being that the plating function is carried out, making it possible to obtain a box in a repetitive and precise manner.
- the blank 3 located just below the pre-folding mandrel 16 is gripped by the suction cups 14 connected in a manner known per se to a vacuum device, the device 21 then being in the low position.
- the arms 15 are mounted and the blank 3 is placed below the interior face of the rectangular mandrel 16.
- the suction cups 22 then grip the blank from the inside of the mandrel 16, the suction cups 14 being vented and the arms 15 are raised completely in the vertical position.
- the arms 34 then pivot and grip the side flaps of the blank 3 which are U-shaped and pressed against the mandrel.
- the carriage 23 integral with the suction cups 22 is then automatically moved by the cam system, the pawl 32 pushing the blank to the folding position on the mandrel 24.
- the gluing means 42 deposit the glue necessary for fixing the flaps together, and for fixing the flaps together to form the bottom in known manner, up to the folding position on the mandrel 24.
- the plate 39 is then approached and pressed on the mandrel before or simultaneously with the folding of the upper flap by the tab 69, the tongue 72 then being compressed on the upper flap which has been previously glued on its contact part with the tongue.
- the small lateral flaps 75 of the bottom are folded under pressure on the bottom 47 of the mandrel and then the tongue 72 is applied; the upper flap 77 is folded, the lower flap and upper flap assembly then being pressed against the bottom of the mandrel by the plate 45.
- the carriage 23 is returned to its initial position, actuated by the cam system dimensioned in consequence, to take a blank and repeat the operation. Once the formation of the box is finished, it is ejected when the carriage returns with a new blank, all the jacks and other devices having participated in the forming returning to their initial position, and so on.
Landscapes
- Making Paper Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9409773A FR2723338B1 (fr) | 1994-08-05 | 1994-08-05 | Dispositif et procede pour la realisation d'une caisse a partir d'un flan |
FR9409773 | 1994-08-05 | ||
PCT/FR1995/001044 WO1996004129A1 (fr) | 1994-08-05 | 1995-08-02 | Dispositif et procede pour la realisation d'une caisse a partir d'un flan |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0773867A1 true EP0773867A1 (fr) | 1997-05-21 |
EP0773867B1 EP0773867B1 (fr) | 1999-06-23 |
Family
ID=9466138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95927749A Expired - Lifetime EP0773867B1 (fr) | 1994-08-05 | 1995-08-02 | Dispositif et procede pour la realisation d'une caisse a partir d'un flan |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0773867B1 (fr) |
JP (1) | JPH10503722A (fr) |
AU (1) | AU3167995A (fr) |
CA (1) | CA2196699A1 (fr) |
DE (2) | DE29512459U1 (fr) |
FR (1) | FR2723338B1 (fr) |
WO (1) | WO1996004129A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104828631A (zh) * | 2015-04-29 | 2015-08-12 | 江苏远翔物联科技有限公司 | 一种预压定位装置 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2752190B1 (fr) * | 1996-08-09 | 1998-11-06 | Otor Sa | Machine, procede et demi-flans de matiere en feuille pour la realisation d'une caisse de grande dimensions |
FR2767282B1 (fr) * | 1997-08-12 | 1999-10-29 | Jean Claude Serre | Procede et machine pour le montage d'une caisse a section polygonale a partir d'une decoupe a plat en carton ondule |
CN104816859B (zh) * | 2015-04-29 | 2017-04-12 | 江苏远翔物联科技有限公司 | 一种右预压定位装置 |
FR3057201B1 (fr) * | 2016-10-11 | 2018-11-02 | Ds Smith Packaging France | Procede et dispositif de mise en forme d’un flan autour d’un mandrin. |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2665137B1 (fr) * | 1990-07-24 | 1994-07-01 | Otor Sa | Caisses en une matiere en feuille, flans et machine pour la realisation de telles caisses. |
DE4209141C2 (de) * | 1992-03-20 | 1994-05-19 | Kettner Verpackungsmaschf | Vorrichtung zur Herstellung von Verpackungen, insbesondere Kartons, aus flachen Zuschnitten |
-
1994
- 1994-08-05 FR FR9409773A patent/FR2723338B1/fr not_active Expired - Fee Related
-
1995
- 1995-08-02 CA CA002196699A patent/CA2196699A1/fr not_active Abandoned
- 1995-08-02 DE DE29512459U patent/DE29512459U1/de not_active Expired - Lifetime
- 1995-08-02 WO PCT/FR1995/001044 patent/WO1996004129A1/fr active IP Right Grant
- 1995-08-02 DE DE69510455T patent/DE69510455T2/de not_active Expired - Lifetime
- 1995-08-02 EP EP95927749A patent/EP0773867B1/fr not_active Expired - Lifetime
- 1995-08-02 AU AU31679/95A patent/AU3167995A/en not_active Abandoned
- 1995-08-02 JP JP8506268A patent/JPH10503722A/ja not_active Ceased
Non-Patent Citations (1)
Title |
---|
See references of WO9604129A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104828631A (zh) * | 2015-04-29 | 2015-08-12 | 江苏远翔物联科技有限公司 | 一种预压定位装置 |
CN104828631B (zh) * | 2015-04-29 | 2017-03-22 | 江苏远翔物联科技有限公司 | 一种预压定位装置 |
Also Published As
Publication number | Publication date |
---|---|
JPH10503722A (ja) | 1998-04-07 |
DE69510455T2 (de) | 1999-12-09 |
FR2723338A1 (fr) | 1996-02-09 |
DE29512459U1 (de) | 1995-10-19 |
AU3167995A (en) | 1996-03-04 |
CA2196699A1 (fr) | 1996-02-15 |
FR2723338B1 (fr) | 1996-10-04 |
EP0773867B1 (fr) | 1999-06-23 |
DE69510455D1 (de) | 1999-07-29 |
WO1996004129A1 (fr) | 1996-02-15 |
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